Mac fans spinning while working with raster brush tool

[AlxFsl]

Hello, this is my first post here, and I am relatively new to Affinity Suite, as I started to use it just at the beginning of 2021. The experience was so satisfying that , despite having to reimagine a bit my workflow (I was on Adobe before), I purchased it and more than happy for that switch. However, after the latest couple of updates, every time I work on raster images on my MacBook Pro 2017, fans start spinning fast and loud (while I recall that one thing I noticed when I installed the trial versions was exactly the opposite, as the latest Adobe software were constantly overheating my laptop). I have already checked in the forum and double checked all performance settings, I also tried to set the fasted view, but with no success. Here is a screenshot.

This happen in particular when I use the brush tool, in all Photo, Designer and Publisher. 

I haven't found other posting the same problem, so I wonder if there is anything in my computer settings that can cause the problem. 

I'm running Affinity Photo, Designer and Publisher on a MacBook Pro 13'' 2017, Big Sur, and work with a Wacom Intous Pro.

Any suggestion is welcome

Alex 

 

[iconoclast]

Hi AlxFsl!

Have you tried to uncheck the Hardware Acceleration (at the bottom of the Prefereces panel on your screenshot)?

[AlxFsl]

11 minutes ago, iconoclast said:

Hi AlxFsl!

Have you tried to uncheck the Hardware Acceleration (at the bottom of the Prefereces panel on your screenshot)?

Hello @iconoclast, thank you for your reply. I just tried and use a watercolour brush, but as soon as I start to zoom and pan the fans start. Any other idea of what that might be?

[stokerg]

Hi @AlxFsl and Welcome to the Forums,

Could you try disabling Metal Compute in Preferences and see if the same happens?

I'm running a MacBook Pro 2019 and haven't noticed an issue with the fans when using a brush.    Also it would be worth checking out the latest beta from here and see if the same happens.

[AlxFsl]

On 7/1/2021 at 9:43 AM, stokerg said:

Hi @AlxFsl and Welcome to the Forums,

Could you try disabling Metal Compute in Preferences and see if the same happens?

I'm running a MacBook Pro 2019 and haven't noticed an issue with the fans when using a brush.    Also it would be worth checking out the latest beta from here and see if the same happens.

Hello @stokerg, thank you for your reply. I tried to disable it, but not so much changed, unfortunately. I notice it gets particularly crazy when I'm using artistic brushes such as DAUB watercolours, or Spray brushes. Pressure active seems also to worse the problem. 
I'll have a look to the beta version, thank you