fold buttton problems

[xbobx]

hi. i play mtts stack and tile. i play on 7 sites at the same time and up to 20 tables. very often my fold button doesnt work. i click fold and table goes back to stack but it didnt fold. also the other buttons lagging sometimes. my cpu use is aroung 70-80%. often have to click buttons 2 or 3 times until it works. its very annyoning and tiliting. also if i use hotkeys its lagging and folds at a other table then