Raster brushes in Designer not working

[Maylissa T.]

Hello, 

I'm trying to use the Paintbrush tool in the Pixel persona, but none of the brushes are displaying properly and they don't work either - please advise what is wrong and how to fix, as I'm trying to complete an assignment and this is extremely frustrating: 

[Maylissa T.]

Ok, now I noticed that in Affinity Photo the brushes don't even show up at all, what's going on???

 

[Callum]

Hi MaylissaR,

Please could you try the suggestions under the ASUS Sonic / ASUS GPU Tweak III / MSI Nahimic heading found using the below link? If this doesn't solve your problem please could you tell me if you have Open CL enabled in the apps performance preferences?

Thanks
C

[Maylissa T.]

Hi Callum, I disabled OpenCL and the brushes worked! Thank you!!