a few weeks ago I noticed that I was getting a black glow around heroes or items on the field when I hovered them. A neat exception that might localize it very specifically is Lunara: when playing her, hovering my hero puts a black border only around my spear.
Turrents, mercs, enemies, these usually are black around the whole thing.
At about that time I was making changes to the display settings to optimize play-speed (I’ve got a 560x mobile radeon in my macbook pro, recognized as such in the display settings). I wrote it off since otherwise, my playspeed was ideal.
Since then, a couple of patches have come out, and I’ve recently just changed settings again hoping to force it to go away. But it won’t go away. I’ve already tried to repair. What can I do?