Issue is still present in Rekordbox 5.8.1
Rekordbox 5.8.0 slow at Analysis Lock
Recently I did a clean install of both MacOS Catalina and RB 5.8.0 and right away I noticed that the Analysis Lock is very slow. All the tracks I tested were previously analyzed in RB 5.8.0. This happens regardless of the file properties (length, type, etc).
In MacOS Mojave with RB 5.6.1 this issue did not occur. I did not test RB 5.8.0 under Mojave.
After I adjust the beatgrid (using the 'Set first beat' button) and hit the Lock button I have to wait for around 3 seconds before I can do anything else. Please note that unlocking works fast.
My laptop is a 2015 MacBook Pro 15" with an i7, 16GB RAM and 256GB SSD.
LE: Seems like the issues happens when the track needs to be unloaded because this also occurs after I adjust and only want to go to the next track in the playlist. In the end it does not seem to be related to the Analysis Lock, but the Lock process makes it even worse