I'm using Windows 10 with all the most recent updates and a fresh install of New Vegas (GOG version) with GECK extender. Whenever I open it it looks like this. The particular areas of annoyance are highlighted. Text is just too big in every field and it makes it a total pain to use.
I've tried messing with compatibility and resolution settings but there's just nothing that has made the program look the way it used to. I would really appreciate any suggestions!
Update: After entirely too much frustration, I ended up brute-forcing a solution. My suspicion was always that a missing font was the culprit, so I just copied all the fonts from a different computer where the GECK was displaying normally, moved them to my main computer, and installed them all. Sure enough, it worked, though this sadly means I have no idea which font was the winner.
Anyway, I'm leaving this up in case anybody runs into the same problem.