StackAndTile can sometimes be intensive on your computer, depending on what settings you are using.
Here is the recommended computer set up for the best performance:
- Windows Vista, Windows 7, Windows 8, or Windows 10
- Aero theme in Windows (right click desktop -> Personalize). Win10 doesn't need to do this.
- Scan Mode = DWM (best) or GDIP (2nd best choice) (found in StackAndTile advanced options)
If you use hotkeys only, and don't click any buttons with your mouse, then you'll also want to turn off "Left Mouse Click Detection" in SaT advanced options.
One other user said that he was getting some lagging with a high # of tables, and he fixed it by going into Settings -> System -> Display -> Graphics Settings -> Classic App -> 'Browse' for poker client exe -> Options -> High performance