Starting Katalon tests takes a very long time

[kazurayam]

@manuel.rolle

… , but then sometimes nothing happens for 10-20 seconds.

I am not very much surprised to hear 10-20 seconds of idleness of Katalon Studio. It happens.

I have ever done a performance mesurement of the various versions of Katalon Studio where I found Katalon Studio v10 runs far slower than v9. See my report as follows:

Katalon Studio v10.0.0 runs slower than v9.7.6 --- a measurement report

Problem to solve In August 2025 when Katalon Studio v10.3.x is current, in the Katalon Community, people started discussing that the latest version of Katalon Studio runs slower than before. http://forum.katalon.com/t/katalon-10-3-1-smart-wait-is-now-much-much-slower/180887 I thought that I should find which exact version of Katalon Studio got slower. Nobody has measured it. So I will do that. Environment using a machine Mac Book Air, 2-18, 1.6GHz Intel Core i5, 17GB memory, macOS Sonoma1…

and this:

Katalon Studio v10.3.1 runs slower on Windows than on Mac

At the end of Aug 2025, I wrote a report “Katalon Studio v10.0.0 runs slower than v9.7.6”. After that, I got more questions: @petr.brezina suggested that Katalon Studio v10.3.1 runs slower on Windows than Mac. Is it a fact? The Smart Wait feature — how is it influencive to the processing time? So I carried out one more time of performance examination of Katalon Studio versions. Let me report the result. I used my Windows 11 laptop with 16GB memory. An ordinary consumer model, nothing special…

It would worth trying to run Katalon Studio on another machine; preferably Mac, not Windows.