So, my earlier post in this thread was about 1920x1200...
Now I have PC with 3 desktops - two 1920x1200 and one 1600x1200 (later exchange to 1920x1200).
Reasons of this 16:10 1920:1200 was not M65, I had 2x 1920x1080 and when I was working with 1600x1200 I saw difference of 1080 and 1200...
In case of M65 is also required 1920x1200 16:10 instead 1080. Why? Simple resolution of VIC-II(e) is 320x200 - and it has also 16:10 aspect ratio.
I own also PEXHDCAP capture device and it allows capture up to 1080 Full HD - what I did for capture? Bought downscaler with variable resolution scaling and used 1680x1050 to use. So, for retro feel can have also other outputs, but will be limited by resolution. I hope that 1920x1200 will be always available.
Miro