Loader Problem

First don't know should i post this problem but i will try . From 1 week running diablo from loader making very hard for play , because after few time fps start to drop and lag terrible for 1-2 seconds . When i close the game and start it again for some time it's running again normal . I try with glide but nothing again same lag . I am running the game on windows 7 . Thank You

 

@Zdravko and before this week u running diablo with out problems? Install some App or download inusual program? give me more info. Anyway can try re-install diablo and tell me..

 

I did not install any program or something that will harm my comp , i try to re-install diablo 2 and again same . After the last stop/restart/rebot of the server i think loader start to do this lag