Re: Constant crash: Unreal Engine is exiting due to D3D device being lost.
I get this exact same crash/error report. I'll play for hours and nothing seems to be stuttering or having issues. The game will run fine for a while, but suddenly it crashes. No sudden GPU spikes. My GPU barely gets a workout through this game. Although CPU optimization in this title is garbage and that constantly varies from 20-90% depending on what's happening in the game so there's no telling if the issue is there, but this is the only game on my system that does that. Gears 5 uses the same engine and keeps my CPU at about 30%, which tells me that Respawn didn't make this GPU bound. Additionally, I've monitored my temps and everything stays in the green. Both my GPU and CPU are water cooled and nothing effects their temperatures, so it's not an overheating issue. I've updated my Drivers and even did a clean install of those to try to fix the issue with no luck. EA and Respawn need to fix this and I wouldn't be surprised if this is a DRM glitch causing the problem.
Troubleshooting: Removed drivers, installed clean drivers, uninstalled new drivers, installed clean old version of drivers, "repaired" game (verified game files), uninstalled/reinstalled game, ran Windows update, and even ran game on low/medium/high/epic settings at 1920 x 1080, 2560 x 1440, and 3840 x 2160. Finally decided to test another game. Played Gears 5 for 10 hours (total) in campaign and online with highest settings at 3840 x 2160. CPU was at 30% (peak usage) and my GPU hit 95% (peak usage). Same engine, no crashes.
System Specs
OS: Windows 10 Pro 1909
CPU: i7-7700k
Memory: 32 GB
GPUs: Nvidia Titan Xp and 750 Ti GTX (PhysX)
Launcher: Origin