Java debugger slowdown after 2019.3?

Hi all, ever since upgrading to 2019.3 ultimate (from 2019.2) I've noticed a lot of debugger slowdown. Stepping through debugging used to take a fraction of a second per step, but now every step is taking several seconds. Also, when I alt-click on a variable during debugging to observe its value, it  upwards of 10 seconds for things like variables, although Intellij shows the variable values inline with no delay.

This doesn't seem to be related to general computer performance in any way, everything else is fast and this machine has 32GB of ram. Using windows 10. Also, nothing else relating to my environment (like project JDK) has changed in the timeframe that I've noticed this slowdown.

Has anything about the debugger changed since 2019.2 ?

Thanks!