so, so many bugs in 9.3

I've been noticing a consirable slowdown in LR workflow since the update - mainly in graphics processing, not reflecting edits, not rendering at 100% when zooming in, general slowness. But I've been noticing some even more vital bugs the past few days: about half the time during startup it freezes while loading preferences. Sometimes it will become unresponsive during local adjustments requiring force quit. 

I just tried to export 87 jpgs to my internal SSD and it kept failing to export a certain amount of them - took 5 or 6 tries, each time exporting the ones that failed, it would do a little more and fail the rest. Really frustrating. LRC was pretty bug-free for a good while until this, for me at least. 

on a 2019 iMac on OSX 10.15.5