I have this issue quite a while for now but could never tell you because you closed issues at github, but maybe you still read here:

DirectX12 Output crashes the games at 4k.

And as more fps you have as quicker it crashes out.

Need for Speed Hot Pursuit 2 is a good example because this one runs all the way uncapped fps, even at the main menu, and thus you reach easily several hundreds of fps there.
With lower fps it takes a little while longer until it crashes, but it always will do at some point.

Need for Speed High Stakes is the same. Its mostly stable because it runs only at 64 fps hardcapped, but the in-race pause menu is uncapped. And yep this pause menu is big danger for crashing out again.
Its not like it needs 1000 fps to crash. Already 240 or even less is enough that it does crash.
Its only happening at 4k. 1440p or lower is stable.
with DirectX11 it is not happening but it has much, much lower fps in NFS HP2. DirectX12 has at least TWICE the fps compared to DX11. So very unfortunate. But DXVK is even faster ( 3 times more fps than dgvoodoo DX11)

A friend tried it too and he confirms it.

We both have Desktop PCs with Windows 10 and a Nvidia GPU