Brushes are lagging in metal accelerating mode on Mac M1 Max.

[Roland Schwarz]

In big sized pictures (25500px x 16500px) the lag is at the beginning of a stroke. If the app catches up, everything goes smoothly. The lag doesn't depend on the size of the brush. 

In open GL mode is no lag at the beginning of a stroke but performance in long strokes falls short to brushes in metal accelerating mode.

It's the same in old and new created documents. And use of a mouse or a pen tablet doesn't make any difference either.

Since you advertised Affinity Photo as Apple Silicon optimized, I assume this lag - showing in metal acceleration mode - is a bug.

I'm using 
- Affinity Photo 1.10.5
- Mac Studio M1 Max with 64 GB RAM, OS Ventura (was the same with the OS before);
- Apple Studio Display in the Design & Print setting (P3-D50);
- Wacom Intuos 5M;
- Logitech G502 Hero

[Lee D]

Thanks for the report.

It's not necessarily a bug, but a request to improve the brush engine/overall app performance, which is something that's always being developed.

[Roland Schwarz]

Thank's for your answer. It's great to work with Serif apps!