Updated Mesa to 20.2.4, Wine to 6.0-rc2 Staging, DXVK to 1.7.3. Ran Giants: Citizen Kabuto through dgVoodoo 2.72, D3D11 backend. Behaviour is similar - objects constantly flicker. Do you need an apitrace and in which setup (i.e., running through dgVoodoo or plain native DX7)? Maybe more test-subjects?
Logs:
Screenshot (note missing parts of the landscape):

Do you need an apitrace and in which setup (i.e., running through dgVoodoo or plain native DX7)? Maybe more test-subjects?
With dgVoodoo.
This is the third game in that bug report though. Please make separate reports for each game.
After upgrading to Mesa 20.2.6 and Wine 6.0-rc3 all mentioned problems are gone. Guess the issue can be closed.
Nothing extracted yet.
Recently I started to get random glitches in games running through DXVK. Seemingly random objects may flicker from time to time, or constantly, or even never appear. In A.I.M., it can be gliders and entrance gates (animated objects?), or grass. In Tribes: Vengeance, it's interface elements like text or buttons, and even clouds in the main menu. I was able to get a trace for the former game, but the latter refuses to run.
It seems that more you play, more glitches will appear.
I feel like #1808 is related.
Software information
System information
Apitrace file(s)
Log files