Smart move checking the curtains instead of trusting your ear. If you film the shutter at high speed with your phone in slo-mo and count frames against a known light source, you can get a rough read on 1/1000 without buying a tester.

Putting "hands, fingers, arms" in the negative prompt is just hiding the problem though, not fixing the actual gen. You'll still get weird limbs if your base prompt is messy, you're just cutting off the arms entirely and hoping nobody notices.

Wait, $40 for a tool that just folds paper? Are your signatures really coming out that different or is this a bit of a honeymoon phase with the new toy?