I have observed two Windows 10-related problems.
1. If I log in at the main Forums list window and then select the PowerTracks Forum, it comes up saying I am not logged in. If I log in again from that screen, it accepts the login, but takes me back to the main Forums screen where it again says I'm not logged in. This is perhaps an Edge Browser-related problem. It works fine with PT 2015 in Windows XP under Chrome.

2. If I turn on the metronome for playback, the notes in the measure where I initiate it are either fully or partially dropped. It's OK after the first metronome measure. Again, this works fine in Windows XP, so maybe it's driver-related.