[LAD] Any tips for (jack) rt audio thread debug breakpoints?

Hi list. When I put breakpoints in gui or non-rt audio thread code, no problems. But when I put breakpoints in rt audio thread code, behaviour is odd. I can continue the program and even have more breakpoints. But when the program tries to close, it hangs inside jack_deactivate(). I must kill it and QJackCtl and finally jackd. At bit cumbersome. Seems breaking into the program hiccups jack. Any tips or settings I can try? I realize pausing the app is kinda crazy and over-qualifies as 'waiting too long in an rt thread' but it seems to get so far and work OK but fails at the end. Can it be helped? Thanks.