Resolve 20 beta 3 - Magic Mask Performance Issue

Anyone else experiencing hours of wait/processing time using Magic Mask in BETA 3? Was attempting to create a mask of a talking head & remove the Zoom background. Should be fairly simple. Just a simple head shape & only a 6 minute file. These previously took minutes in v19. I believe Ive only tried it once using v20 BETA 1 & did not have this wait time. Setting were set to FASTER vs BETTER. Also tried it multiple times and nothing else is running or stealing resources from Resolve.