Hey guys, well i'm experiencing some weird issue here with Doom III which i wasn't before couple of months ago. THe problem is that when i first played D3, i used cats 5.1 at that time and performance was superb at 1024x768 HQ no AA&8xAF... Used to get around 50-60 fps and 30-49 fps during fights. However, ever since i switched to the latest drivers, something has gone wrong.. Now the same game jerks so much it literally becomes unplayable at the specified settings given above. It stutters just like half life 2 for god knows what reason. I always defrag my drive and clean all old junk before playing a game, but it didn't solve the problem. I resolved back to the 5.1, it helped a bit in the beginnning, but then again the same stuttering problem arised .. THe card isn't overclocked, b'coz doing so will show red dot artifacts within game, even if pushed 10mhz for both core and memory... What i want to know is that which driver gives the best possible performance for DOOM III at the moment. I tried 5.2 (worst driver), 5.3 (somewhat satisfactory), 5.4(even worse than 5.2), 5.1 (better than all these) drivers.. Really appreciate the feedback.. Thanks..