I have this incredibly annoying graphical glitch in the viewport which duplicates objects, adds an offset to them, and flickers constantly. Every object does this, every project does this, every viewport does this. This occurs in a brand new fresh project.
Using AMD Radeon 21.11.3 drivers and Unreal 4.27.1
Interestingly, disabling Translucency in the viewport mostly fixes the issue (still not perfect). But thankfully this allows me to get work done for now