Comment # 3 on bug 105423 from Andrey Grodzovsky

(In reply to Max from comment #2)
> Thanks to Nick Sarnie on Discord, he found that disable completely DC fix
> the issue.
> 
> I fix it with "amdgpu.dc=0" in my grub.conf

Did you try latest  kernel (4.16.rc4 i think) seems to me this issue is already
fixed there in DC.

Andrey