It works 😉

19041 d3d8.dll

17124 dll *tweaked* d3d8.dll

And for the sake of comparison:

Crosire D3D8to9

dgVoodoo D3D11 fl 11

dgVoodoo D3D12 fl 12

All test configured to 1920x1080 / AA 4x / 32 bit textures

Thanks OP for the modded DLL.

Using the Build 17134 version with UT2004 in Windows 10 2004 19041.

The only weird thing I've noticed is that Nvidia's drivers cannot force V-Sync in UT2004. This isn't really a problem, because UT2004 has its own V-Sync setting, but it's still strange and could potentially be a problem if anyone wanted to use one of Nvidia's V-Sync variants (adaptive etc.).

Just use this for UT2004 (it doesn't have any pixel shader so dgVoodoo is not needed) if you want d3d9-compliance level (so the NVidia forced features can work): https://github.com/crosire/d3d8to9/releases

Well... This seems to have fixed itself for my intel Pentium Silver (Apollo Lake) integrated graphics netbook thing, with drivers dated March 2021 (or earlier ones, I don't update my netbook display drivers regularly!). SimCity 3000 now works flawlessly full screen!