I tried that trick with opening taskmgr to change cpu affinity, but this didn't improve things either. Knowing that Stalker games can behave poorly with Crossfire, I tried using just one card.

My computer is quite capable of dealing with this, i7-3770K, 32Gb DDR3, 2x R9 380s in Crossfire, 2Tb SSD, so I'm scratching my head now. cfgs, I can get CS and CoP to look great and play perfectly, 60FPS or greater isn't a problem even for Misery +ENB +SweetFX with every graphic detail maxed out, 8圎Q AA, supersampling, edge-detect, 16x AF, max tessellation, max textures, 1920x1080 resolution. I've been down this road many times before, I've often had to tweak in-game settings, user.ltx, console, CCC settings, ENBs, various. This made only a slight improvement, taking my average frame rate in the Cordon rookie village up from 14 to 17. I checked the FAQ, I've been round the block with STALKER games and mods before so I was already using the DX9 enhanced dynamic lighting renderer, and my grass distance and sun rays were already low, but I set them to off anyway. The game installed perfectly and launched correctly first time, load times quite normal, I've had no issues with it whatsoever other than I cannot get it to perform smoothly or look particularly good - in fact it looks sodding awful. Nothing like those nice screenshots on the ModDB page. My frame rate for Call of Chernobyl is terrible, it's effectively unplayable, and it looks dreadful.

Stalker cop cannot open file fsgame.ltx