Musesounds not exporting correctly in MP3s

For the past five pieces I've composed in Musescore 4 using musesounds, the playback when exporting is inaccurate and totally fine in app.

Examples of this are
- Quarter notes being played in eighth note rhythm randomly in a piece (1 + - 3 4; instead of 1 2 3 4;)
- Notes arriving a subdivision too early or too late randomly (I was doing a clarinet trio and the 3rd clarinet in the C section consistently played its downbeat on the and of 1, instead of just the downbeat on 1
(1 2 3 4; - + 2 3 4; instead of 1 2 3 4; 1 2 3 4;))
- Random instruments just rushing a few measures of music and getting ahead of the rest of the ensemble (This caused me to have to switch a flute solo to an oboe solo because the oboe worked fine and not the flute?)

This only happens at random in random sections and instruments and fixes itself later (I literally had a part rush a section but on the repetition it fixed itself? No matter what I did it just messed it up the first time)
It is consistent every time if it does mess it up in the first export and is immensely frustrating when I have spent a lot of time orchestrating and then one part is absolutely screwed up because the program decided to break rhythm.

(Files are in order of complaints listed above. Timestamps for each mess up. Though this is the "in app" versions which dont have messed up audio and it will not allow me to send mp3s)
1) 0:31
2) 1:01
3) 2:55