Photo repeatedly hangs (beach-ball) for some seconds while using brush tool

[bbc.]

macOS 11.7.1, MacBook Pro 16,1 8-Core i9, AMD Radeon Pro 5500M

When I paint with white on a small 400 dpi grey scale file (2.3 MB TIFF, 5 MB afphoto) the brush tool often hangs (spinning beach ball) for some seconds, then allows normal tool action again. The Activity Monitor does not indicate that Photo is hanging.

If I turn off in Preferences > Performance > Hardware Acceleration: "Enable Metal compute acceleration" the hangs go away.

Why is this happening?

[bbc.]

Affinity Photo 2 2.0.3

[stokerg]

Hi @bbc.,

If disabling Metal resolves the issue, then its likely either a bug in Metal on 11.7.1 or a combination of a bug in Metal and our code.  Which year is your MacBook from and i'll see if we have the same one in the office i can do some testing on.

[bbc.]

Thank you for looking into this.

A MacBook Pro 16,1 is the MacBook Pro 16" from 2019 (last before M1)

[musiberti]

I have the same Model (MBP 16, 2019) and issues with brushes too. If I try to change the options of any Brush Affinity (all 3 apps!) hangs and show the beachball for a minute. Changing the rotation of a brush is nearly impossible.