Hi,
I had the same problems with VNC, the screen resolution is set to 1920x1080 but it seems smaller...

I would suggest to try "remote desktop connection", here it works perfectly with my Pi4.
I installed "xrpd" in the Pi4 and "Remmina" as the client in my PC, as explained in this page:
raspberrytips.com/remote-desktop-raspberry-pi/

I add a screenshot, my PC has a 1920x1068 screen resolution, the Pi4 has 2880x1620 :-)

I hope this helps !



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