Brush On Mask Very Laggy In Affinity Photo

[Doren Sorell]

My brush always lags VERY much when I'm painting on a mask. 

In the silent video below, I first do it with the mask in black-and-white so you can see, and then do it without the mask visible. 

You can see my brush-cursor move off the photo when I have stopped brushing ... yet you will plainly see the brush continues even though I have stopped brushing. 

This happens all the time, and usually if I try to save after it can take up to a minute. 

I have purposely turned off all other layers in this example and only left the dodge and burn group on, which are the layers I'm brushing on. And, yes, I know I have a few layers of dodging and burning, but this lag in the brush happens even with one layer. 

Also, I'm adding a screen shot of my Mac's specs, and my Affinity preferences ... and I'm on the latest update for Photo. 

Any help would be great. Thanks. 

[NathanC]

Hi @Doren Sorell,

Could you try changing your View Quality setting to 'Nearest Neighbour (Fastest) and the Display to 'OpenGL (Basic)' in Preferences > Performance to see if this makes any improvement to the brush on speed?

Could you also send over the file you're having an issue with as an attachment or alternatively to the below private dropbox link? I'll see if this issue can be replicated.

https://www.dropbox.com/request/KAWZM586EHgj4ZbC6i4l

 

Thanks,

N

[Doren Sorell]

Hi @NathanC, 

 

Thanks for getting back to me so promptly. 

The weridest thing is that I cannot change it from Bilinear to "Nearest Neighbor (Fastest)". When I try and close and reopen the app, it's back to Bilinear. Very strange. 

And changing it to OpenGL (Basic) doesn't change a thing. 

I'm sending you that file but also another file, one I just made, that's much more simple, and it's doing the exact same thing. I uploaded the screenshot of the two files I've sent for your reference. 

By the way, it's also doing the exact same thing with the most recent update, which I updated to today. 

Let me know, and thank you,

D

[NathanC]

Hi @Doren Sorell,

I'm trying to replicate this issue back here but i've been unsuccessful so far, could you confirm which brush you used in the video and the specific settings on that brush profile when you double click to edit the brush?

A screenshot of this would be great.

[Doren Sorell]

@NathanC

 

[NathanC]

I've been able to replicate this issue using the same brush configuration and it appears to be related to the brush spacing, to reduce the brush lag i would advise increasing the 'Spacing' setting on the first tab to 3/4% and trying again.

[Doren Sorell]

@NathanC

Wow, that fixed it!! Thank you so much. I don't ever remember even changing that setting but, yes, it works now flawlessly. 😃

[R C-R]

8 hours ago, NathanC said:

... i would advise increasing the 'Spacing' setting on the first tab to 3/4% and trying again.

Do you really mean 3/4 of one percent, or to 3 or 4 percent? From the screenshot Spacing was originally 1% so I assume you are suggesting increasing it to a larger percentage value.

[Doren Sorell]

1 hour ago, R C-R said:

Do you really mean 3/4 of one percent, or to 3 or 4 percent? From the screenshot Spacing was originally 1% so I assume you are suggesting increasing it to a larger percentage value.

He means over 1% (3% or 4%). And he's right; it fixed it.