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Is anyone else experiencing slow TestComplete 12.50 performance?


Is anyone else experiencing slow TestComplete 12.50 performance?

I have TestComplete 12.50.4142.7 installed. After a recent Windows 10 update the performance of it has degraded quite dramatically.


For example, when I am using the Object Spy it is very slow to recognise objects, it can take up to 10-15 secs. Whenever I have TestComplete open my on-screen cursor/pointer has a continually spinner beside it (what Windows does when it is loading something or processing). This only happens when TestComplete is open. I also often have problems closing the application and have to frequently terminate the process via Windows Task Manager.


Has anyone else experienced such problems? I have not made any dramatic changes to the TestComplete project that I think would cause this, nor to the application under test.

Esteemed Contributor

Reference the following


It's entirely likely that this is causing your slowness.  So, couple of configuration changes you can make:


1) As per that article, turn off, in Windows 10, applications running in the background.

2) Uninstall the indicated updates that may cause slowdown (

3) Turn off the option to test windows store applications (Options | Engines | General).

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