Hi,
Just downloaded and installed 5.2, almost directly when I was trying to use some of the basic tools (circle, extrude…) it got super slow and freezed. The grid dissapeared in the viewports, and they all started to flicker.
Have been using the beta before, and also 5.0 and 5.1 without no problems.
running a mac pro (Mid 2012) el capitan with a ATI Radeon HD 5870 1024 MB (yes, very old… but stable)
konvex