Getting line artifacts even without upscaling

Hi, know you fixed an img2img issue a while back that would result in faint but visible lines around edges seemingly randomly.

With the latest build, I'm now seeing several pixels worth of weirdness around some gens, again, seemingly at random.

Included a few examples, checked with a friend too who is seeing this with all models they're using.

It's like the noise generated at the edges isn't right or something, not sure what's causing it.

Images are just screenshots of grids, but the most important parts, that last one is kinda crazy, looked burned on the top left, and it doesn't look at all like it fits with the aesthetic with the gen. Having said that, this problem occurs with all gens, models and prompts at random.

Edit - it is especially bad when using certain resolutions, 1280x720, 1336x832 for example.