I'm using Endpoint vpn client E80.62 for Windows. My Dell xps15 laptop uses "high dpi" (250% on a 13inch 4K screen).
I use a second "regular" full hd 24inch screen.
The Endpoint client doesn't cope with this "highdpi" settings, and it's very difficult to use (barely usable really).
See attached screenshot.
I hope it'll be fixed in an incoming version.