Comment # 3 on bug 106446 from tempel.julian@gmail.com

Maybe the artifacts with 75Hz are related to my problem I have with 75Hz WQHD
via DL-DVI?
https://bugs.freedesktop.org/show_bug.cgi?id=105300

However, with 72Hz and amdgpu.dc=0, my desktop is always 100% free of stutter 
artifacts (without heavy load on CPU and GPU) with my RX 560.