Try to keep hats under 1,000 polygons, and weapons under 6,500.
A: Texture sizes should not be larger than 512x512. A: Maintain the same texture density of other models in the world (Nothing higher res or lower res than what's next to it.
Nothing too modern, hyper-realistic or overly “cartoony”.
Clearly the art style has evolved over the years, but here are some guidelines that you should keep in mind as you create your items.
I've been aware of the validate steam cache files for a while.
You can do it manually from the properties tab by right clicking in the game list.
If something goes whacky with your game, this sometimes fixes it.
A: Keep the polycount similar to what's already in the game.
Cinnamon, by default, skips the compositing rendering manager if an application runs fullscreen, which in turn, disables Vsync.
Enabling the compositing manager turns ON Vsync and (depending on the system) slows the game down.
Chris' FPS Configs for TF2 - Different configuration files to automatically set all settings to their absolute lowest or highest.
It is recommended to troubleshoot before resorting to these as they can cause problems.