That's what I am talking about. Currently testing +450. +2000 on the mem has been solid for me as well.
Famous last words....
I have potentially run into two issues. So after I passed the +450 run why not try +500...insta crash no problem I will just unlock voltage control and voila. Lo and behold my clocks drop to like 2287mhz or something like that and is stuck there regardless of how many reboots. Google it turns out there is a bug if you unlock voltage control in afterburner it's a thing. Several reports after people unlocking voltage control have reported the same issue some worse than others. It useable just at muchly reduced clocks.
So basically a driver issue with afterburner and knowing how slowly afterburner gets updated could I wait for the next Nvidia driver update? Hell no I will just use the command line prompt to reset the base clocks and reinstall the driver. The only driver that is out and will allow a 5xxx series card to run.....so I did that. It asked to restart and I haven't been able to get a video output since and that was over an hour ago lulz...
Stuck back in the 1080 and will try again tomorrow. I am sure there is some kind of moral story somewhere but I will be damned if I know what it is