I also have been having issues with internet ever since moving to IOS 14.3. Internet is very poor. Doesn’t matter whether I am using a wifi connection or 4G it is very slow. After about 30 secs of video it buffers and I have to switch wifi or mobile data off and on against for it to continue playing. General browsing is often very slow to load pages as well. Is there going to be an update to fix this. I know multiple people experiencing this. Me and one of the people have an XS Max and the others have 11 pro and other 11 variants