Serious multicam delay

It is pretty much impossible to do a quick multicam edit when clicking an angle takes about a half second to full second to see the cut. I am trying to do a play we shot with nothing but dialoge between characters and timing is important but I am having to stop and go back and replay almost every cut.

How many camera angles, what media and timeline resolutions? Also - your system specs.

I'm asking these questions to be able to put the poor performance into context. Multicam is slow but on a powerful machine it should be workable...

edit - I see you have quite a powerful system (I didn't see your specs while I was replying). So system specs shouldn't be the reason - I haven't done much multicam with Resolve Studio 16 - I tried a bit the other day with some 1080p XAVC-L media and it seemed OK... maybe a bit of a delay. Much better if you use proxy media, of course.

4 cameras. 3 URSA minis and 1 Pocket
Only shot at 24fps @ 1080 and ProRes 422