There is a known issue with UE4 and RTX Cards. I have a GeForce RTX 2070 and there is a consistent “Video Driver Crashed Resetting” issue that UE4 has no idea what causes it and I have an open ticket with Nvidia, e-mailing back and fourth with tech support to find a solution. Tech support suggested that it may be fixed in a later update. I will post any updates I get on here, but if they don’t find a viable information to repair the crashes, us RTX card users may be SOL.