layer thumbnails disappear

[Space Martin]

I get the feeling that the layer thumbnails disappear quite often, I can reproduce it by moving around layers in a heirarchy and then do undo.
However most of the time when I reproduce it, they come back quickly, so perhaps it just takes a very long time to generate them sometimes?

However this makes it hard to work sometimes as I cannot see which layer is which.

[Callum]

Hi Space martin

please could you provide a screen recording demonstrating this behaviour?

Thanks
C

[Space Martin]

@Callum Sure:

Ok here is the behaviour after I open the file:

Half a minute later or maybe even more:

 

[Pšenda]

HW Acceleration in Preferences is on or off? Try off.

[Space Martin]

This happens regardless if HW acceleration if on or off. (both show without thumbnails for more than 30s)

(Main difference is that with HW acceleration on, it seems it takes a lot longer to load the file before the hierarchy is even displayed) 

[carl123]

Can you upload a screenshot of your Edit > Preferences > Performance dialogue?

[markw]

This is a known and longstanding bug going back at least to 2020: https://forum.affinity.serif.com/index.php?/topic/124433-layer-thumbnails-often-dont-render/#comment-681124

[Space Martin]

So, using hw acceleration or intel or nvidia (rtx 2070 super) renderer don't seem to make much difference.
Behaviour generally is a bit random, once they appeared after around 10s, but mostly >30.

However, it seems I found a workaround, using the WARP renderer, most of the time the thumbnails are rendered within 5 seconds!