The results are similar regardless of browser or platform. Win/Mac/iOS, IE, Chrome, Safari, etc.
I go to sharkrf.link and connect to my hotspot, which goes quickly, then the page either doesn't load and times out, gets stuck on "loading" or sometimes loads garbage.
When it does load it seems to work OK, but then degrades over a number of days. A hard reboot starts the cycle over again.
Throughout it all, the OP actual operation is fine.