Well What I would do go youtube and start Watching videos I saw some on the video card didnt look
for the mbo but that would prob help alot.And help you with what settings to change.
If its a vram problem on gpu or pwr it will work until it puts a load on things then it will freeze But if somebody
binned the gpu or messed with it who knows. (Are the fans working?)
Even the system ram could be hanging it. (Reseat the ram)
Or if the mbo settings are not right (I think it would work on default settings because its a asus gpu like
the mbo. (reset the bios see if that helps)
And it locks up with all the different software cant think its a driver issue.
Figure out how to lower clock settings to not put a strain on everything ram speed,gpu,Cpu ect.
(Been in Electronics my whole life with degrees thats how I see it, (subbing stuff out sometimes
the best way)
Thats about all I got for now. Good Luck!