Uploading glitches

So I tried uploading to Musescore.com using a score of mine. It would start creating the audio for the score and midway crash. I use the lowest audio rendering settings (512 bytes).
So I tried going on Musescore.com and adding manually. This would allow me to upload the score, but the online audio would be deep fried, loud, and highly compressed.
When I export to mp3 normally from the desktop app, there is no issue with the sounds.