Select and Refine mask slow

[Sanpanza]

I have a  maxed out 27 inch iMac with tons of scratch disk space but when I use the select and Refine Mask tool to mask out people on a white background I often get a spinning wheel that lasts for minutes.

I have also reset the Drawing mode to "Normal" and set the Cache back to 4 from 6.

What is going on with PS 2018CC ? This is not workable.

[JohnnyTooGood]

Same problem with PS CC19. Did you ever fix your problem?

macOS Mojave V10.14.1

iMac (27-inch, Late 2013)

3.5 GHz Intel Core i7

24 GB 1600 MHz DDR3

NVIDIA GeForce GTX 780M 4096 MB

[Sanpanza]

Hi JohnnyTooGood , I think the problem is with painting on huge files over 4 gigabytes. Phertotoshop really boggs down when files exceed a certain size.

[JohnnyTooGood]

Is this an answer to the above question? The select and refine mask is bloody terrible in PSCC, its poor software development! I read people with $8500.00nz iMac Pro's having the same issues. When are they going to fix this problem!

[Sanpanza]

This problem happens with many of the brushes as well. Photoshop slows way down with several functions once you pass the 4 gig threshold. I have talk with post production artist Denis Dunbar who works on movie posters and he often spits large images into parts as  a work around. It is a pain and forces most people to work in 8 bits instead of 16 bits.