Hello everyone. This post is almost "a call for help" in the direction of @Marcel Offermans or @Christopher Elliott or anyone else on skilled on that subject at @S397. Anyone in the community with some skills or specific knowledge of RF2 settings in the game files is welcome. The subject that I have a big problem (it's a little bit to say) is the very strong performance loss that I have on my system since the transition from the beta DX11 to the current version DX11. Any advice to find a good performance / quality report is welcome : The GPU and in particular the CPU (new phenomenon), are totally dropped. I manage to obtain an acceptable performance / quality compromise since I understood that with this new version of DX11 and my hardware, it is purely and simply impossible for me to find any acceptable compromise BY USING THE AI (even 4 AI in low quality , with auto detail FPS = 60). I succeed to have good compromise performance/quality WITHOUT USING AI. Thus any help regarding other aspects of performance / quality improvement is welcome. Nevertheless, having identified where is the heart of the problem (use of the AI), I wish to have a support essentially on it. So I identified that : - Even the AI in low detail, 4 AI only, and auto detail FPS = 60 : the performances are catastrophic (GPU and CPU. I never really had CPU problems with DX9 and beta DX11). - AI headlights have catastrophic effects on performance in my hardware. I guess the rearlights and especially the red highlights on the track too. - The water clouds behind the AI are too greedy in terms of performance for my hardware, even in special FX = OFF and soft particles = OFF. - It should be able to deactivate the water on the bodywork and windows of the AI. - The fact that AIs are present and on the scene, even in very low graphics, destroys performance. The CPU is incredibly impacted : it's not just a loss of FPS, but there are big "lags" as I've known when I played video games over 15 years ago. - Shadows of the AI, not essential but killer of FPS. - It would be nice if the AA parameters of RF2 do not necessarily affect the AI ...... I wonder if that would not be a good idea. In short, even if any help is good to take, I mainly looking to optimize the performance of the AI : optimizing the player.json or any other file, tips to configure the UI in a performance goal, I seek in particular to disable the AI headlight or reduce the impact, water clouds behinds AI optimized, etc. Thank you.