iphone 12 pro max hotspot issues

I had an iPhone 11 Pro Max an used my hotspot all the time. Now it stops working all the time. I’m currently typing this on my iPad and I’m having the same issue. There will be times webpages or online games will stop responding even though my iPad is still connected to the hotspot and the iPhone 12 Pro Max has full bars 5G.

Is anyone else having this issue? I miss my 11 Pro Max.

I have AT&T