Playback speed issue. Weird/irregular tempo changes. Suddenly very fast, then slow.
The playback speed of MS2 scores in MS3 is irregular and shows sudden changes in overly fast or slow, when 'old' MS2 scores are played back. This is the case for scores that have subtle tempo changes as well as for scores that don't have tempo changes, but fermata or breathpauses.
Try for example my latest score, no. 266 (https://musescore.com/user/1685616/scores/5328442 ), download and open it in MS3 and play it back and compare that to the playback online or in MS2. This is, by the way also the case if no tempo changes are present at all. In no. 264, it happens, a suddenly way faster playback speed, after the first fermata (https://musescore.com/user/1685616/scores/5328093 ).
I also added the scores here, but I tried more scores and they all have the same issue.
(I'm using the Appimage of MS3 in Ubuntu Studio; LInux)