I've heard for AI number, the graphics side does not matter, it's just the cpu doing the calculations. I have the same cpu caepinus owns and can run spa and suzuka with 49AI and maybe a wee hiccup once a lap, like a little flicker/stoppage, nothing that would disturb the game or lead to an off track. It's far more important to close background processes and stuff, to have as few other calculations running on the cpu. I never check for fps, but the image looks smooth enough to me. My graphics card is a gtx 1060 6gb, but as I said, don't think this matters at all for how smooth AI run (actually already with that card I can run max oponents visible with almost all settings to high or epic).