I’ve only sideloaded two files which took over 30 minutes each. These took multiple tries across multiple days.
Right now I am trying to sideload an app, I left my phone on for an hour and came back to the progress bar being stuck at the same section it is always stuck at (see image).
But, I am able to refresh apps normally and that takes a normal amount of time. The ipa is 1GB and the previous files were around 600MB.