https://bugs.winehq.org/show_bug.cgi?id=50733
--- Comment #25 from pernegger@gmail.com --- Created attachment 69820 --> https://bugs.winehq.org/attachment.cgi?id=69820 wine-6.6 log using WINEDEBUG=+quartz,strmbase,+gstreamer,+timestamp GST_DEBUG=5
Couldn't test 6.5 because of bug #50874, apologies.
6.6 is much better [log attached]. Subjectively: still not perfectly smooth, slight choppiness in the audio now & then, too -- but I'd say it's back at 6.0 levels, so, serviceable.
Meaning, the degradation that triggered this specific bug report has been dealt with, so I could see closing it. On the other hand, it could be better, and I could swear MPEG1 playback has already worked flawlessly in the past ... your call.
Either way, thank you for getting it back into usable shape so quickly!