Affinity Photo2: Lags on all brushes ...

[johndmoulton]

Since moving to Affinity2 I am noticing long, irritating lags when using various (any!) brushes. Is there a cure for this? I'm seeing lots of posts about lag, but nothing that gets to resolving the issue.
iMac. M1 Chip. 16GB Memory on Ventura 13.2.1
Artwork 8.75" square. 300dpi. Around 20 Layers.
Basic to complex brushes no matter the tool - all the same.
It seems the longer I work the more the lag.
I have tried closing all other programs and even restarting the computer.

[Dan C]

Hi johndmoulton, 

Is this occurring on new documents too? How does your cpu/memory usage look in your activity monitor while this occurs?

Is it possible to see if disabling your systems auto brightness in your system settings > Displays.

Though not normally associated with iMac's there's a possibility that Apples process for this can affect performance.

Lee

[johndmoulton]

LeeThorpe: Thanks for this. It comes and goes. I do think it's a RAM issue, but disappointed as I thought the new M1 chip and loads more RAM than I had previously would put an end to watching the rainbow wheel spinning - sometimes even when I just move my cursor from one place to another! I can't test the computer's RAM abilities in other suites because I don't have anything as complex or 'RAM-demanding' as Affinity.
BTW: I don't see >Display. Is it now 'System/User Interface/UI Brightness' that you are referring to?
Thank you for your help. Love Affinity and your support.
John.

[R C-R]

2 hours ago, johndmoulton said:

BTW: I don't see >Display. Is it now 'System/User Interface/UI Brightness' that you are referring to?

I think Lee is referring to Displays in Mac System Settings, not in any of the Affinity preferences. (It's what in older macOS versions was called System Preferences). 

[johndmoulton]

RC-R: Thanks for that. Found Display and switched off Auto. Time will tell. Thanks again for the input. J.

[Gripsholm Lion]

@johndmoulton I would be quite interested to know whether you found that this helped. Thanks.

[johndmoulton]

12 hours ago, GripsholmLion said:

@johndmoulton I would be quite interested to know whether you found that this helped. Thanks.

The issue appears to have been resolved and somewhat irritatingly, I don't know how or why, it just doesn't happen now! To answer you question, I did switch off auto - it's still switch off - but the problem persisted a while after that. Maybe kicked in on a restart?