Lately I have been getting a lot of Critical Errors while using MC. If I remember correctly it is happening mostly with 3D movies ripped in MKV that I have played without issue before.
I have tried updating MC to the latest. I let Windows 10 and Nvidia auto update. Other than that I don't really mess with anything on the HTPC. At least one time it seemed like madVR was the problem.
I'm not really sure where to start diagnosing the issue.