Hmm… I don’t have anything of the sort running or even installed. The closest thing would probably be GeForce Experience/ShadowPlay running in the background.
I think that I may have found a fix as well, though I’m not sure exactly what helped.
- Adding UE4 to “Manage 3D Settings” in the Nvidia Control Panel and setting “CUDA - GPUs” to a single GPU instead of “use global setting” in an SLI rig.
- Enabling “Debug Mode” under “Help” in the Nvidia Control Panel
My best guess would be the enabling Debug Mode in the NVCPL since (from my understanding at least) it disables any overclock that you’ve set on your GPU(s) and reverts them back to the (Nvidia) factory stock clock speed. I am running custom firmware on my GPUs which may have had in impact on compatibility with DX12 and UE4.
It didn’t crash in the 2 hours that I was working in the editor, where it used to crash seconds after launch. Seems fixed(?) for now, at least.