We discovered that it could happens sometimes, that the frequent TF2 update 'broke' in some ways the engine configuration. It happened sometimes also to me and to my friends to have sudden and strange FPS drop on medium performance PC configuration with Team Fortress 2. Do other people run into a similar situation here? I'm seriously thinking of buying another better processor, but its an expensive proposition as I pretty much would buy a completely new rig - CPU/ Mobo/Ram/ HDD, OS (Win 7) etc. None of this stuff seems to seriously help the situation. Decreasing the resolution of the game to 1600x1050 with 'medium' detail for all the graphical options.Buying a new graphics card (a dumb decision, as soon after I realized the game was CPU.Removing all unnecessary startup processes from Windows XP to see if performance would improve.I find that in firefights with a lot of people (the number of people on the server makes a huge difference) my FPS will drop to 10-25 FPS for small but significant periods of time. Also have a new GTX 460 768 MB graphics card. I'm running on a Intel Core 2 Duo E6750 CPU, which is pretty darn good for performance per. I'm running on a native 1900x1200 monitor and find that the game is really CPU limited. Do you guys have any ideas for how to improve TF2 performance?