# Katalon 10.3.1 - smart wait is now much much slower **URL:** \ **Category:** Web Testing\ **Tags:** katalon-studio\ **Created:** [August 21, 2025, 2:52pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887 "2025-08-21T14:52:53Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![mateusz.mysliwiec](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/mateusz.mysliwiec/32/23869_2.png) [@mateusz.mysliwiec](https://forum.katalon.com/u/mateusz.mysliwiec)\ **Post date:** [August 21, 2025, 2:52pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/1 "2025-08-21T14:52:53Z")
Hello, we just updated Katalon to 10.3.1, according to the [Katalon Studio Release Notes: Version 10.x | Katalon Docs](https://docs.katalon.com/katalon-studio/release-notes/katalon-studio-release-notes-version-10.x) ”This update addresses Smart Wait timeout issues, improves recorder handling for custom date pickers, enhances license management, and resolves several execution-related defects to deliver a smoother, more reliable testing experience.” some of our scenarios that used to take **3m 24s** now take **7m 30s** - when watching scenarios, we can see that test execution is now much slower, because every UI interaction is delayed for much longer due to smart wait. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 21, 2025, 11:46pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/2 "2025-08-21T23:46:44Z")
> [@mateusz.mysliwiec](#): > > we can see that test execution is now much slower, because every UI interaction is delayed for much longer due to smart wait. You should eliminate SmartWait. Use it only when necessary. You can disable it as default in `Project > Settings > Execution > WebUI` ![image](https://europe1.discourse-cdn.com/katalon/original/3X/a/b/abb23fa30c055b15343a6a316edaa20ee8a9675f.jpeg) And you can enable it by `WebUI.enableSmartWait()` keyword in your test case script; you can disable it by `WebUI.disableSmartWait()`. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 21, 2025, 11:47pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/3 "2025-08-21T23:47:03Z")
Just for your reference, the following post shows you a case where SmartWait shines. > [@Stale element not found, is this relate to using same Object?](http://forum.katalon.com/t/stale-element-not-found-is-this-relate-to-using-same-object/97973/107): > > The following is a variation of my Test Case where I enable and disable the Smart Wait by code. I think that explicit code is better than by config.The code clearly reminds me that I need the Smart Wait here. import com.kms.katalon.core.testobject.ConditionType import com.kms.katalon.core.testobject.TestObject import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUI import internal.GlobalVariable /\*\* \* automate signing-in to Microsoft Azure DevOps with Smart Wait \*/ TestObjec… In this case, I knew the reason why I need Smart Wait, and got success. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 22, 2025, 3:51am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/4 "2025-08-22T03:51:06Z")
> [@mateusz.mysliwiec](#): > > we can see that test execution is now much slower, because every UI interaction is delayed for much longer due to smart wait. Does your script PASS after a long execution? Or, does it FAIL after a long execution? In the case your test fails, then you need to fix the failure first rather than wondering about the time taken by Smart Wait. ---
**Author:** ![dineshh](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/dineshh/32/24488_2.png) [@dineshh](https://forum.katalon.com/u/dineshh)\ **Post date:** [August 22, 2025, 6:13am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/5 "2025-08-22T06:13:45Z")
can you explain use case for awareness? ---
**Author:** ![mateusz.mysliwiec](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/mateusz.mysliwiec/32/23869_2.png) [@mateusz.mysliwiec](https://forum.katalon.com/u/mateusz.mysliwiec)\ **Post date:** [August 22, 2025, 7:50am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/6 "2025-08-22T07:50:42Z")
Hello, my test case passes in both cases, but like I mentioned, it now takes more than 2x as long to execute, on contrary, full regression test suite (80 tests) now failed in github action pipeline because it starved server out of resources, wheres with previous Katalon 10.2.4 everything was fine. ---
**Author:** ![ua1855533](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/ua1855533/32/30227_2.png) [@ua1855533](https://forum.katalon.com/u/ua1855533)\ **Post date:** [August 22, 2025, 11:56am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/7 "2025-08-22T11:56:38Z")
We just updated to **Katalon 10.3.1** and noticed a big slowdown. Some of our scenarios that previously took **3m 24s** are now taking **7m 30s**. From observation, it seems that every **UI interaction is delayed much longer due to Smart Wait**. While the release notes mention fixes and improvements for Smart Wait, the actual execution feels slower and is impacting test runtime. 👉 Question: Is this slowdown an **intended behavior change** in Smart Wait, or could it be a **regression/bug** introduced in 10.3.1? 👉 Is there a **workaround or configuration** to reduce the delay until it’s fixed (e.g., disabling Smart Wait or tuning its timeout values)? * * * 🔗 Reference: Katalon Release Notes 10.x 🔗 Related resource: [Zaytrics – AI automation solutions](https://zaytrics.com) ---
**Author:** ![duyluong](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/duyluong/32/1116_2.png) [@duyluong](https://forum.katalon.com/u/duyluong)\ **Post date:** [August 22, 2025, 2:06pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/8 "2025-08-22T14:06:56Z")
HI @ua1855533 , @mateusz.mysliwiec Can you provide some steps to reproduce the issue on your website? @Elly_Tran, please help create a ticket for KS dev to take a look at the issue after people here provide their reproducible steps. ---
**Author:** ![Elly\_Tran](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/elly_tran/32/21874_2.png) [@Elly\_Tran](https://forum.katalon.com/u/Elly_Tran)\ **Post date:** [August 25, 2025, 8:01am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/10 "2025-08-25T08:01:36Z")
Hi all, We have updated the document relating to the change of Smart Wait, please refer here: [[New Release] Katalon Studio v10.3.0 - July 2025 - #8 by Shin](http://forum.katalon.com/t/new-release-katalon-studio-v10-3-0-july-2025/180250/8) . Thank you ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 25, 2025, 10:58am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/11 "2025-08-25T10:58:10Z")
> [@mateusz.mysliwiec](#): > > Hello, we just updated Katalon to 10.3.1 > … > some of our scenarios that used to take **3m 24s** now take **7m 30s** - @mateusz.mysliwiec In the setting Project \> Settings \> Execution, what value for the “Default wait for element timeout (in seconds)” do you have? I suppose you have 60 seconds, am I right? — That is the reason why your scenarios take 7m 30s, I think. ![スクリーンショット 2025-08-25 19.55.03](https://europe1.discourse-cdn.com/katalon/original/3X/c/9/c9473d363d9002396d0bc51c613e647f336da048.png) Try changing it to 30. I suppose that your test runs around 3m 24s, same as before. Try changing it to a shorter value like 15. I suppose that your test runs faster than 3m 24s. * * * Up until v10.3.0, the SmartWait waited maximum 30 seconds, which was a fixed value. Now in v10.3.1, the SmartWait refers the “Default wait for element timeout (in seconds)” This design change puzzled you, @mateusz.mysliwiec, @ua1855533. ---
**Author:** ![petr.brezina](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/petr.brezina/32/16104_2.png) [@petr.brezina](https://forum.katalon.com/u/petr.brezina)\ **Post date:** [August 26, 2025, 2:54am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/12 "2025-08-26T02:54:14Z")
Hello there, we’re stuggling with the same issue. ---
**Author:** ![Elly\_Tran](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/elly_tran/32/21874_2.png) [@Elly\_Tran](https://forum.katalon.com/u/Elly_Tran)\ **Post date:** [August 26, 2025, 4:04am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/13 "2025-08-26T04:04:40Z")
Hi @petr.brezina Can you please try our update above? ---
**Author:** ![petr.brezina](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/petr.brezina/32/16104_2.png) [@petr.brezina](https://forum.katalon.com/u/petr.brezina)\ **Post date:** [August 26, 2025, 3:58pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/14 "2025-08-26T15:58:46Z")
Hello @Elly_Tran , yes, I did. I set Default wait for element timeout (in seconds) to 30s or even 15s, but it didn’t help. Each command or every iteration with driver just takes 1s or 2s longer than usual. Here is a very simple fast test - 2 runs - with and then without the new SmartWait You can see the Elapsed time and also duration of each step. (the logviewer shows duplicated commands/steps - but this is already reported in another topic) With ![SmartWaitOn](https://europe1.discourse-cdn.com/katalon/original/3X/e/4/e41337f774fa01c836925d8cc3d7508c09ce1bed.png) Without ![image](https://europe1.discourse-cdn.com/katalon/original/3X/c/2/c2f321596d4a164098306a663338acc5f3177972.png) Thank you ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 26, 2025, 10:05pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/15 "2025-08-26T22:05:06Z")
> [@petr.brezina](#): > > Here is a very simple fast test - 2 runs - with and then without the new SmartWait May I ask you a question? You wrote that your test runs ok without SmartWait, right? Then you don’t need it. Why do you bother yourself wondering why the new SmartWait makes your test to run slower than before? You can just disable SmartWait, can’t you? In my humble opinion, the SmartWait is like a cold medicine. When you really need it, it’s better to take the right amount of pills. However, when you are healthy every day, you should stop taking cold medicine as it may influence you to feel sick. I think Katalon should warn uers that SW is a medicine that could be harmful. I am afraid they haven’t and wouldn’t. ---
**Author:** ![petr.brezina](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/petr.brezina/32/16104_2.png) [@petr.brezina](https://forum.katalon.com/u/petr.brezina)\ **Post date:** [August 27, 2025, 7:29am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/16 "2025-08-27T07:29:32Z")
Haha, thank you for your reply. That’s a good point 😃 Well, it’s not that simple to turn SmartWait off completely. We’ve been using it in our team for a few years. We’ve created so many projects and much more complicated test cases than what I showed you. If we turn this off most of our complicated test cases (especially with Jenkins and Katalon Runtime) aren’t stable anymore. It crashes on different things. W’e’ve always relied on SmartWait and it’s worked like this until now 🙂 ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 27, 2025, 11:49am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/17 "2025-08-27T11:49:58Z")
> [@petr.brezina](#): > > W’e’ve always relied on SmartWait and it’s worked like this until now You can stay with v9 from now on, which would work satisfactorily for you. ---
**Author:** ![rudy.nutbeij](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/rudy.nutbeij/32/23870_2.png) [@rudy.nutbeij](https://forum.katalon.com/u/rudy.nutbeij)\ **Post date:** [August 29, 2025, 11:20am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/18 "2025-08-29T11:20:54Z")
My tests also slowed down significantly. Since katalon 10.3.x our total test run duration increased from 4 hours to 6 hours. It’s bothering. I have smart wait disabled though. My default page load timeout is 2 seconds, with continue after timeout. Delay between actions 33 miliseconds and default wait for element timeout is 2 seconds. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 29, 2025, 1:34pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/19 "2025-08-29T13:34:26Z")
> [@rudy.nutbeij](#): > > I have smart wait disabled though. > … > from 4 hours to 6 hours You must be joking. You wanted to write “from 4 minutes to 6 minutes”, didn’t you? * * * The Log Viewer slows down your test significantly. Read the following topic: [http://forum.katalon.com/t/log-viewer-slows-down-your-tests-how-to-prevent-it/60252](http://forum.katalon.com/t/log-viewer-slows-down-your-tests-how-to-prevent-it/60252) If you remove the Log Viewer completely, I believe your test would run 10 times faster. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 30, 2025, 12:41am UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/20 "2025-08-30T00:41:56Z")
> [@mateusz.mysliwiec](#): > > some of our scenarios that used to take **3m 24s** now take **7m 30s** - when watching scenarios, we can see that test execution is now much slower, because every UI interaction is delayed for much longer **due to smart wait**. @mateusz.mysliwiec You wrote in the original post that you got a problem **due to smart wait** change in v10.3.1. Now I doubt it. What is the basis for your reasoning? There could be other reasons, though unknown yet, couldn’t be? If you could help us, please try running your test using Katalon Studio 10.3.0. Does it take 3m 24s, or 7m 30s? If v10.3.0 takes 3m 24s, then we can infer that the changes in v10.3.1 must be the reason of your difficulty. If v10.3.0 takes 7m 30s, then we can infer that the changes in v10.3.1 must NOT be the reason of your difficulty. If you could help us, please try running your test using the older versions — 10.2.4, 10.2.3, 10.2.1, 10.2.0, 10.1.1, 10.1.0, 10.0.1, 10.0.0, 9.7.6, … if you could do this experiments, you would be able to firmly identify which version of KS got slower. Then we would be able to study the exact version for the reason of slowness in depth. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [August 30, 2025, 12:15pm UTC](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887/21 "2025-08-30T12:15:57Z")
Please have a look at my study [http://forum.katalon.com/t/katalon-studio-v10-runs-far-slower-than-v9-a-measurement-report/181372](http://forum.katalon.com/t/katalon-studio-v10-runs-far-slower-than-v9-a-measurement-report/181372) @mateusz.mysliwiec @petr.brezina I would ask you to try downgrading your Katalon Studio to v9.x.x and see. [Next page](https://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887.md?page=2)