Most of these Fatal Errors are on your side. The options include clearing the cache, reinstalling your graphic drivers, running the game's Options / Repair, or reinstalling the game. Ideally the game works best running off an SSD.
In addition if there are any overclocking to your CPU, RAM or GPU try disabling them all. Some RTX GPUs are unstable even at stock VRAM speeds (try lowering), AMD CPUs don't do well with higher RAM frequencies. Look up your CPUs manufactures rated RAM speed and make certain you're not exceeding it.
Sometimes even a a lot of Lost Packets can trigger Fatal Errors. You can test and anything below an "A" can certainly cause problems http://www.dslreports.com/speedtest