Generates image at 4k+ resolutions, will not save

When generating and then upscaling images to 4k or greater resolutions, it will progress through the generation process, but then fails with the generic "If a serious error occurs..." error message and does not save the final image.

I used the same process that worked in V. 2.2.1b which is to select an SDXL model, select 1280x720 resolution (for 16:9 desktop background format), then when upscaling use 2x twice.

My system

Windows 11 Pro (current build)
Intel Arc A770 16G
AMD Ryzen 7 3700X w/64Gb system RAM
Failing AI Playground version: 2.4.0b

While generating, I tried resolutions between 1024x576 and 1280x720 with no success. I also tried downgrading the Intel graphics drivers to older versions that worked with AI Playground 2.2.0b without success, and using the included monitoring software, my VRAM utilization showed between 90-96% before failure.

No files, tests, or entry points are identified in the report. First reproduce the SDXL generation and two-step 2x upscale on the stated Windows and Intel Arc setup, then inspect the failure around the final save step. Done means 4k-or-greater output completes and the final image is saved instead of showing the generic error.

Written by the indexing model from the issue text.