I recently setup bolt.diy in cloudfare and is working but not usable, meaning the response is really realy slow and many many times it doesn’t outputing any response.
I assume that cause the provider/model you are using is maybe slow / not delivering good results. I just tested with your instance and for me it is everything working properly and normal speed as expected.
If you tested with same provider, maybe you got some browser plugins / ad blockers, blocking something?