Characters turn pitch black randomly and on hero select

I’ve noticed sometimes in-game, in the HUD the character portrait would sometimes turn the character’s skin pitch black, and on top of that, today I found that when I mash R Shift on the hero select screen, that also turns their skin pitch black.

Sounds like the assets are loading too slowly. Are any of the drives on the machine completely full? How much RAM is in use?

None of the drives are close to full, and the RAM usage is at about 50%

Try running a scan and repair, maybe the assets are simply missing or corrupted.