All the windows are too small.

[ukiesaurus]

I have a 4K screen, which may be the problem. If so, how do I fix it? thanks!

[musikbear]

I have a 4K screen, which may be the problem.

Yes

If so, how do I fix it? thanks!

This
http://neoshamon.blogspot.com/2015/06/a ... ew=sidebar
Works for some, try that.

Besides that, since you are new here Welcome to the forum ukiesaurus! Here are all our important links:
viewtopic.php?f=1&t=4740
-And a few rules for Avatars, signatures, posting and using the right sub-forum :)
In case you like to introduce yourself to the rest of the community, this is the right place
viewtopic.php?f=4&t=4480