Migel1

> What's about your transparency settings? When Windows 7 Aero theme is used transparency of window decorations is enabled. When Windows 7 simplified theme is used transparency of window decorations...

I tried to play with SystemPropertiesPerformance.exe and found out that the key reason for slowdown is the "Enable desktop composition" setting. If this setting is off the performance is good...

Far opened in a real console of the same size do not have this problem - it performs equally fast regardless of the selected desktop theme. So WinAPI is certainly...

Reproduced the issue in a clean user profile and found out more presize conditions to reproduce it (with screenshots of statistics): 1. Choose Windows 7 Aero desktop theme. 2. Run...

Got an update on the situation. It seems that the issue was a result of hardware problems. The motherboard recently died and after replacing it by a similar one the...