Hi @rileyhowley,
I was able to check out the Sandcastle you provided on my Mac, and I’m seeing similar results.
I believe the lopsided text is due to Small fonts have misaligned glyphs · Issue #8474 · CesiumGS/cesium · GitHub. I’ll note in that issue that it seems to be more severe on a Mac. I was able to use the workaround suggested by the user in that thread in which the font is rendered using a larger size (I used 64pt) and scaled down using scaleByDistance.
Here is a Sandcastle combining both my suggestion as well as @jjhembd’s suggestion for increased resolution.
I hope that covers your needs!
Gabby