Update: Patch 5 is out and has fixed the laggyness for good. At least for me, it did.

Patch-notes are epically long and they must've fixed a ton of other stuff in this one - one issue that also got fixed for me was the game instantly crashing to desktop when I tried to set DLAA to "off". Tried this last night with patch 5 installed and it worked again as it should.


S.