I reply myself, just in case someone is experiencing the same issue.
I bought a new bluetooth mouse for 11 bugs and works like a charm, it seems the older one was “too old”, works well with other pcs though, so it must be something with drivers of both card chipset and mouse . As to sound no bluetooth headset, not tried again, better wired.
Wifi still estable, though not much speed, up to 32 at it best. I got a 5G usb adapter, let’s see how it works. Once tested I will report.
USB 2.0 port still the same, no clue or explanation why it works like that yet.
Cheers!