What OS are you using?
On my RX 480 I am not seeing that issue on Win 10 X64, I will try a 390 card later when I get chance.
running win10 home 64bit. going from that steam discussion it seems to be the r7 200 and r9 300 series of cards that encounter the problem. also running drivers 16.8.1 and the issue has been there for quite a few previous drivers before.
Same problem here, with a R9 Fury (latest stable drivers to date, Windows 8.1). Many people seem to have the problem (see Graphical glitches :: Betrayer General Discussions) so it should probably be easy to reproduce.
It looks like people tried multiple drivers versions with no success, which may indicate that it is a game problem. What is most suspicious (and might rather indicate hardware or driver level issue) is that it seems to happen only with certain cards, 'though. The devs tried a few things but eventually gave up on this.
This issue still persists. Is there any hope for a fix or workaround?
My specs are:
OS: Windows 7 64bit
GPU: Radeon RX 580 Series
PowerColor Red Devil Golden Sample
Radeon Software: 17.7.2