Cant render png/Artifacts in 4k

Development Rendering
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1

Hi. I want to render out a imgae sequence. But when I choose .png this happens:

45360-buw.jpg
45360-buw.jpg1920×1080 122 KB

another problem is, that i get these artefact when i render out a 4k .jpeg. (the white boxes)
It works fine in 1080p.
any ideas?
kind regards, phil

45371-artefact.jpeg
45371-artefact.jpeg3840×2160 529 KB

2

Hi PipTogo -

Thank you for your report. This is a known issue and has been corrected in 4.8. If this has become a blocker for you, feel free to try a copy of the Preview release or the release of 4.8 which should be coming shortly.

Thank You

Eric Ketchum

3

Thanks you for your quick response Eric. I’ll check it out as soon i get home. Kind regards, Phil