That thing is annoying me really hard. Most of times I go AFK and when I come back my theme has changed and the annoying message has shown. "Windows has detected that your computer's performance is slow" I tried to go :
1. Run
2. Typing services.msc
3. Searching for Desktop Window Manager
4. Disabling it and Stopping his action.
After doing that my theme fcked up like this:
I want to have the default task bar theme.. I don't know why I keep getting that message.