There are other things you can try for the DirectX device removed error.
A clean install of the drivers can help, but you presumably would have done so already for the video card upgrade. Given the latest crash in the video drivers, it couldn't hurt to try, though; see
here or
here, for example.
Several people have reported fixing this error by using MSI Afterburner (
topic /
download) to slightly underclock their graphics card ('lower both the "Core Clock" and "Memory Clock" options by around 100 (so they say -100). Apply and close.'). Generally that is enough, though one person reported that the initial test didn't help, but a slightly more aggressive underclock did (IIRC it was something like -200 or -250).
If the GPU / CPU / RAM are currently overclocked, just returning to stock values may help.
There are a couple D:OS EE topics on this error (it seems to be rarer in D:OS 2; it has been reported a couple of times for Baldur's Gate 3, once caused by overclocking):
DXGI ERROR Crash - turned WIN 10 conflict (reverting back to Win 8 avoided the problem)
DXGI device removed error/CreateTexture2D failed (fixed by a clean reinstall of the video drivers)
As mentioned in the second topic, there is a program called
TDR Manipulator that can change a Windows setting to control if and how Windows restarts the video drivers. Telling Windows to stop the resets may eliminate the crashes with the game, though if there is an actual problem causing the resets it will not be fixed, and could potentially lead to the computer freezing.
Do you have a spare hard drive you could try a clean install of Windows on (10 again, or 7/8 if available)? It is a little extreme if you are not having any problems with other games/software, but might be easier than continuing to troubleshoot semi-randomly.
Installing to a new drive would let you easily revert to the original configuration if it didn't help, and if it does you could set up a dual boot and reboot to play, or take your time migrating exiting programs and settings/data to the new install.
