Fast mode gave better results than not so fast mode

I just wanted to try out something I've seen in one of those 30 seconds videos on Instagram. So can you use Firefly to make a mockup of an embroidered patch?

Turns out you might or might not. With a tendency of not.

But the results were considerately better in Fast mode. Most of them got the shape pretty decently, such as this:

https://firefly.adobe.com/public/t2i?id=urn%3Aaaid%3Asc%3AEU%3A5de7ec7d-3ac2-4508-83e2-3d13487600c4&ff_channel=shared_link&ff_source=Text2Image

They were close to unusable in "not fast mode". This was one of the better ones

https://firefly.adobe.com/public/t2i?id=urn%3Aaaid%3Asc%3AEU%3Aecf1ad95-b5e6-46ac-b821-506a779c61ac&ff_channel=shared_link&ff_source=Text2Image

Some came out worse:

https://firefly.adobe.com/public/t2i?id=urn%3Aaaid%3Asc%3AEU%3Aab6959d7-9939-43a7-9489-1e86da83e3eb&ff_channel=shared_link&ff_source=Text2Image

Style reference

Composition reference