Stupid lag

[:1]So yes... my d2 works perfect in windowed mode but when i sett to full-screen and play... lets say i go to chaos and start kill monsters and when i get cursed and there is more than 10 monsters i get lag spikes Got this lag too when other peolples uses their skills And this happens only in full-screen mode What to do that it works so that i can play again

It works nicely when i kill like max 5 monsters and kill them alone... but when more = lag

Need your help |||Just curious, cause I was experiencing something similar last night:

Do you have a Widescreen Monitor?

Did the lag happen ONLY in BNet games / Multiplayer? What server (East, West)

Does it happen in Windowed Mode or ONLY in Fullscreen?|||Do you have a Widescreen Monitor? - yes 22''

Did the lag happen ONLY in BNet games / Multiplayer? What server (East, West) - europe

Does it happen in Windowed Mode or ONLY in Fullscreen? - only in fullscreen