Hello thank you for all your answers. I'll try to give a log when i'am back home. Game has been reinstalled, it's one of the first things I done. I'am having it on steam I'am using W10, it's up to date. I never defrag an SSD, like you said, it's bad. My drive is a secondary one, just for games, system runs on a separate SSD Monitor is 2x Dell P2717h. Afaik no sync. Also tried on another monitor (older), issue persist I'll try the trace route, I don't think it's network related, but worth a try. Crash are various, but usually game either freeze, or crash without any error. I'll try to provi