I downloaded the trial version today and have been dealing with Font rendering and  size issues on my 4K monitor. I have 3 4k monitors in a multi-monitor setup on Win 10.
My middle monitor has the windows scale set to 175%.

Firstly the toolbox tab and the Log Entry Grid rows were cut off. I turned off Enable DirectX enhanced rendering, restarted the app and that resolved.

My main issue is the size of the text in the Log Entry View. Its tiny. Changing the setting "Log Entry Display Font" seems to do nothing. I change the font, I change the size nothing changes the font that is being displayed.

If I drag the application onto one of my side monitors (whose scale is set at 150%) it becomes very readable.
Oh! If I drag it back to my main monitor it stays readable. There's my workaround..

Lastly when I start the app and its showing me Workspaces, Recent Directories, etc, the font is tiny as well.