Parallel Execution is not that much effecient

I face same problem.
Appium seems not working so perfect sometimes, possibly cause program stuck.
The node.exe need to be close manually .

Already tried
Katalon version 6.1.0 , 6.1.1, 6.1.2
Appium version 1.7.1, 1.8.1

Also like this Console mode errors on only 25% of device: Unable to start app