>>73270206SDXL doesn't struggle with backgrounds, Pony specifically does
Pony too can be wrangled for backgroud, but you are limited to the resolutions it was trained on
1280x768 starts losing detail compared to 1216x832
Picrel is SDXL, not Pony
I'll try the same prompt on Pony later
Note: the artefacts are from me wrangling with SUNoise, not from the model