Ok, here's a first batch of problematic games I've made notes about, some of them doesn't even need dgvoodoo to work properly at all, but I still try them together to compare antialiasing quality or to see if I'd get smoother performance this way.
Hard to be a god:
not really known game at all, not sure if it'd be worth the effort. It has a really small selection of resolutions ingame, but the config file can be edited manually to set any res up, though anything higher than 1080 will cause ui to disappear. With dgvoodoo ui is present, but bloom shows noticeable offsetting, and double cursor is present too
1080:

4k through dgvoodoo:

Rogue Trooper original:
no real problems here cause it could be patched to support 4k natively, but upscaling through dgvoodoo gives wrong bloom offsets too

Gorky 17:
works pretty much perfectly with isf resolutions enabled and antialiasing turned off, still has some minor glitches with character shadows
Ground Control:
has a noticeable slowdown whenever lensflare effect appears, fast memory access fixes it, but there're still slowdowns in other places, need to test more if it's dgvoodoo related
Ys 1&2 Chronicles+:
crashes whenever character portrait appears on screen, like in the first cutscene. Very strange game in general, looks like it starts in forced borderless by default, changing fullscreen and vsync options doesn't have any effect, has unstable framerates too, dgvoodoo improves it noticeably
Dragonshard:
very erratic frametimes in dx11 mode, even makes my screen flicker, works much smoother in dx12, but crashes when starting any map with antialiasing enabled in dgvoodoo, ingame option doesn't do anything
Sea Dogs:
crashes at startup
Spellforce 1 crashes too, after being hex-edited to search for custom-named d3d9.dll