[BUG] UI elements degrade in quality when multiplayer gem collection text is visible

[thearst3rd]

Note, this happens in the old PC port as well.

What's going wrong

When a gem is collected in multiplayer and a "+1", "+2", or "+5" is visible on screen, some of the UI elements noticeably degrade in quality. Here is a comparison (click on the image and zoom in to see more clearly):

Raw screenshots:

What should happen

The UI elements should look like the top of the comparison image all the time.