

Yeah, one of the issues I was having with running VPN on router is that you need a somewhat beefy router if you want to use your full bandwidth—my router maxes out at about 90Mbps with WireGuard, even though it can NAT around 1Gbps (which is our service).
I implemented two workarounds, one was to use my access point as a VPN router since it had a beefier CPU, and the other was to just use an ARM SBC with Linux to handle that task. (I ended up with the latter, as the former ended up maxing out at around 400Mbps, and introduced some additional headaches.)





VNC? You have your choice of servers, and clients are ubiquitous.
A big gotcha is that you need to be careful with encryption/security, as in classic UNIX style VNC does one thing (remote desktops). It’s easy to forward over ssh though.
You can also use VNC to share, which is not what you want; this depends on the type of server/settings. But you can definitely create a new virtual X11 session and access it remotely.