wired connection trouble

Upfront: I have my desktop pc that has an ethernet connection to my ISP modem/router combo that will intermittently just disconnect from the network. I have a gigabit modem with my ISP that's connected via ethernet to my TUF Gaming motherboard into the Realtek Gaming GbE Family Controller port...

I've had a TP-LINK (Model: TL-PA2010) for a long time connected to my xbox one. It always worked fine, until some months ago when it started randomly disconnecting always at the same time (from about 9:00pm to about midnight, italian time, always at a random time between these hours once a day)...

I have been running Ubuntu 18.04 (64-bit) for a while now without any problems as far as network + broadband connectivity is concerned. Last week, I purchased ExpressVPN and installed and configured it. The setup was, honestly, very straight-forward. I connected to my first VPN region and...

So in my country theres a guy selling 2 lre built systems, both with a rx 480 but in one build the gpu has 128 bit and in the other 256 bit,everything else is the same,but the price with the 128 bit rx 480 system is 410e and the system with the rx 480 256 bit is 455e,so is it worth paying...