I'm sure it may get "not GZDooM"-ed due it looks like the MSI Afterburner 4.0.0 Final(with RivaTuner Statistics Server 6.2.0.7500) broke the screen wipe transition in all GZDooM 2.0 versions for some reasons, it make screen flickering/nothing happened until transition ends.
If I use latest build of GZDooM 1.9-pre series, and working fine, seem only affected on 2.0 series.
Problem in action(no sound for some reasons...):
https://www.youtube.com/watch?v=9X24EjOcxlA
Due not participated the 2.0.x benchmarks so I never know this problem until now.
Yes, disabling MSI Afterburner / RivaTuner Statistics Server 6.2.0.5700/or make its message displays doesn't working on GZDooM 2.0 exe will make GZDooM's screen wipe transition working again.
But for some reasons, I needed it running......

If I needed to report this problem to the author of MSI Afterburner, I'll report this problem to them.
