PB2019R3
Windows 10 64 bit platform
Client/Server apps
Try to get some performance data on each of the two apps when they are run without the other.
As much as I love PB2019R3, in our environment we have seen a 5X degradation in performance with our main app; meaning that the exact same code in the exact same environment run in the exact same situation with the exact same data was 5X faster when the code was PBv12.1 than the same code compiled in PB2019R3.
Sadly, others have reported this as well.
See if each app is running slower, or if it only occurs when more than one of your PB2019R3 apps is running ath the same time.