That's great that you have found a fix for your specific body! Unfortunately I have had GPS disabled since day 1 to allow for max available FPS, and I'm still having lock up issues.
Okay now that this is also a known issue on the R3 this is bad! I hope Canon finds a fix soon as this is not a small investment. Has anyone tried to see if the problem is replicated with IBIS off? Are all of you shooting with IBIS on? Not that that w...