I think that those may be correctable through the proper settings, which I have not explored. Click the sidebar and drag worked somewhat better, but the using the arrow keys on the keyboard made it useable. It wanted to jump all the way up or down for the slightest move. Scrolling in the browser window was difficult. Performance was not as good as I expected, and I am not sure why. The Desktop mode opens a window with separate frames for each remote host window in it. I opened up xterms and browsers, which open up in their own separate native Mac windows on my local desktop. I tried both the 'Seamless Session' and the 'Desktop' modes. In my case, I installed Xpra on the Linux server, but ran the Mac client application standalone from my unprivileged user account. It was not very difficult to get it working at the most basic level, but there were still lots of glitches and issues. I tried it first on the testbed, then on the VPS.

I installed and tried Xpra, which was recommended by one of my kids.

Nomachine rdp client