Supervisor page extremely slow to load

On a fresh new install, on a Raspberry Pi 3 Model A+, HA OS v6.5, Supervisor page is extremely slow to load, it shows indefinitely a blank page instead, any hints why?

I had the same issue with all my ingress tabs since October versions.

+1, having same issues

I solved by installing the 32 bit version of Home Assistant OS.
I thought the 64 bit was the right one because the Pi model is 64 bit, but the 32 bit HA OS is far better.