FPS

i think there is an addon on store you can get to do that, its just uses more cpu power

To maximize your FPS to the fullest, you need to disable some things which may affect your gameplay. A big one is r_shadows from 1 to 0, in console type in r_shadows 0. There are a few other things you can type in too, like fps_max 0, r_3dsky 0, r_cheapwaterstart 1, r_decals 1, and more. Of course there are also addons out there that will do this for you every time you get into single player.

if your playing the game. then probably just go to options enable multicore. if your hosting a server. u should optimize ur server for fps.[some addons cause fps drops]

You can clear workshop and give the app a high priority

Try to reduce the resolution or turn off some addons. Well, of course, turn off vertical V-sync

Most servers have the popup for multicore rendering, but you can also access it under options>visual>advanced.

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If you have low fps it might be your addon's , you might have a bit too much of them?

Enabling multi core in game does not work, never has. You have to physically enable it within the files, not sure exactly where. If your owning a server and want to have it for all players, put an FPS booster on the server

Turn ON your multicorein the game, it will fix it!