I've already seen numerous threads about this and know that y'all probably get sick and tired of this question but I've tried everything from all of the posts that I've found. First off I'd like to say I have ATI and yes, vsync is turned off, even though from the description of this problem you'll probably notice that it isn't the problem anyways. Well, normally when I play 1.6 I use to always get 99.9 or at least no lower then like 80fps, but as of lately it'll bob from 99-15, and depending on the server between 34ish-10 or lower. The only things I can really think of would be my video card (but it's not that bad), or, I have had problems with leaving my computer on over night it storms and gets shut off all of a sudden or something. Now since my brother built this, the bios come up when I boot up and it says "Some of your BIOS were messed up due to whatever blah blah blah" or something like that due to the storms. Now please keep in mind, I know practically nothing about computers as far as all of the more technical stuff goes. System: Microsoft Windows XP Home Edition Version 2002 Service Pack 2 Computer: Intel(R) Pentium(R) 4 CPU 2.40GHz 2.42GHz, 512MB of RAM Adapter Information; Chip Type: ATI Radeon Graphics Processor AGP (0x5E4B) DAC Type: Internal DAC(400MHz) Memory Size: 256 MB Adapter String: RADEON X700 Series Now honestly, I don't know what most of that means, but I know y'all like to know what our computer specs are and not sure what to tell you or where to find out what the stuff is so I can tell you but there's that. I appreciate any help.