Currently if your game resolution is higher than 1080p, the UI can appear to be very small and difficult to read any of the options available effectively and I can't see any simple way to alter the UI scale. An in-game way to change the UI scale would come in handy to fix this issue.

I'm not sure this is possible without a complete UI rewrite, as I am using the built in Unity UI. But I will see what I can do.