Mac version - attempting to auto download transactions (all from the same accounts as recent successful downloads) now take FOREVER. Running latest OS with a 2021 iMac - plenty of RAM etc. Definitely a software issue
Which banks and what connection type? I don't think downloading transactions has gotten slower for me recently, but it wasn't very fast to begin with.
Check to make sure you don't have any open reports hidden behind the main Quicken window; that can result in slow operations.