Hi,
Just finished rolling back to Windows 7.1 following Windows 10 "upgrade".
My PD 13.0.2907.1 would not render H264 m2ts video following upgrade. I think this was a graphics driver issue (Intel HD 2500 graphics).
My previous PD8 gave up rendering when I updated the driver so I rolled back and everything worked fine. Never tried PD13 with the latest drivers, I just kept the "old" ones. I'm guessing Windows 10 updates all drivers by default, hence the problem. Windows 10 gives no options regarding driver updates (part of the EULA apparently) and appears to always update to the latest.
PD13 now works fine on Windows 7.1, although other software has "thrown a wobbly" (Task manager now shows around 20 Media centre tasks that are no longer compatable).
I'll wait until Windows 10.1 is released in October before trying again.
B