Large File Processing

I've had a large file (400-500 kb) uploaded on my profile for some time now, and it's worked without any problems up until now. Processing has usually taken between 10-20 minutes. After having left it alone for a few weeks, the score has suddenly failed to load and play on the browser.
I've since tried reuploading the file both through updating the score and by using save online, but the processing has taken between 1-2 hours each time before ultimately failing.
There are no corruptions in the score, and it runs perfectly fine in the program. I've uploaded larger files before, so I know that MuseScore is capable of handling large scores like these when uploading.