I'm new to Ubuntu. Yesterday upgraded from 18.04 to 20.04. After upgrading to 20.04 I'm having issues with the wifi signal (with 18.04 was working perfectly). Currently the wifi signal is at 60 % almost all the time (never gets to 100 %) no matter the distance between the laptop and the wireless router is. This causes the connection speed to decrease considerably.

Ubuntu 20.04 is installed in a Lenovo T470 laptop. The wireless adapter is Intel 8265/8275 dual band. The kernel is 5.4.0-26-generic.

Any ideas how can I fix this issue? What's the next step? (Remember I'm new to Ubuntu). Thanks beforehand!