Since the launch of patch 2.6.10 many topics have been opened.
But the problem is still not resolved. Me the first I always have random crashes like you several times an hour sometimes. Despite the mass of players who complain nothing is done to solve the problem…
Do not expect any constructive help here, apart from posting dxdiag and msinfo which will waste your time and which will not solve anything.
It’s been going on since November 10, Blizzard seems to ignore the problem.
Near two months without any solutions.