We upgraded from MAC 2015 to 2019 - NOTHING Else changed!!!!

When using 2019 and entering a new bill or a new check or anything it goes into a 40 second loop.

2015 worked fine the day before the 2019 MAC Update. 

If we move the data file from the wired network drive and temporarily install it on the desktop computer it works fine. 

The network is robust and is used by a team of architects, only one person uses QBs, with no problems.

The size of the file is 47MB for 2019 and 37MB for 2015.