Multicam 2x2 performance issue.

I've got a multicam clip with 4 angles on a 1080p25 timeline that plays smoothly except when the multicam viewer is set to 2x2, the obvious choice for 4 angles. If I set it to 3x3 playback in both viewers is fine, I've other clips with up to 13 angles from the same source that plays back fine, as long as I don't pick 2x2 in multicam.. I've replicated this on two different machines.

Any ideas? I've done the edit using 3x3 but it means working with smaller previews than ideal...

This is on Resolve Studio 17.1 with 6k braw 12:1 source files.

Thanks!

I can't think of anything that would cause that. I'll see if I can duplicate after my render.

I can't think of anything that would cause that. I'll see if I can duplicate after my render.

Thanks, it's completely reproducible on my end. Mind you this project has "- WARNING CURSED PROJECT" in its title..... Admittedly for unrelated reasons, but maybe the curse is transferable!

I was unable to duplicate this with 4 H.264 clips. Everything played smooth as silk.

Studio 17.1 for Windows.
8Gb GTX 1070