@Tony_ND I think I found the issue. It seems to coincide with an upgrade of said problem connection to Windows 10 build 2004. Once I rolled back to 1909 everything seems to be happy again.

@Solla-topee 1 - at the router - PA9020(CA) ver 1.0 2 - in the office with 2 computers connected to it. - PA9020(CA) ver 1.0 (The one giving issues) 3 - bedroom with computer connected to it. -...

I have 4 AV2000 powerline adapters and it's been running great for about 18 months now. 1 - at the router 2 - in the office with 2 computers connected to it. 3 - bedroom with computer connected to...