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Mojave Batch processing not working

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I have an issue with batch processing in Affinity Photo 1.6.7 on Mojave 10.14.1, on Macbook Pro 2017 15 inch. The batch processing does not complete, appears to hang part way through. I have not succesfully been able to get any batch processing to work when the number of files is more then a few (say 3 or 4). I imagine the magic number is 8, based on the following:

I am trying a simple operation to add a layer and save as JPG and PNG on 112 PNG files, it completes 8 then hangs while processing the next 8. 600% CPU for about 45 minutes so far. Memory is not inflated, not many disk read/writes.

Screenshots and spindumps attached.

EDIT: I can confirm this issue can be worked around by turning off parallel processing.

The issue seems to relate to the number of cores used when parallel processing. More than 8 images and the job chokes up.

Serif, can you acknowledge this please? Can you let me know if a supplemental update will be released that doesn't allow the user to run into this known issue? Also can I please have access to the 1.7 beta to see if this resolves the issue? Thanks.

Screenshot 2018-11-14 09.19.13.png

Screenshot 2018-11-14 08.08.43.png

Screenshot 2018-11-14 08.11.01.png

Screenshot 2018-11-14 09.19.57.png

Spindump and Sample.zip

Screenshot 2018-11-14 at 08.10.32.png

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Hi robrecord :)

Thanks for your report, this is an issue with Parallel Processing on Mojave that we're aware of and should be fixed in our next build! Apologies for any inconveniences in the meantime.

Our beta for the next update is due out within a few weeks, keep an eye on our beta thread for AP Mac here - https://forum.affinity.serif.com/index.php?/forum/19-photo-beta-on-mac/

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