Maybe it's just an effect that I just don't know how to turn it off, but this seems like an inconsistent bug.
Sometimes when I shoot certain enemies, fire certain guns, or get hurt by some enemies, an explosion of vision obstructing Red X's will absolutely FLOOD the area where the damage/shot is happening.

At first I thought maybe it was just Gmod, but after doing some tests, I uninstalled this addon and Dlib and the problem went away. The console gave me no error messages whatsoever, but kept spamming things like...
Warning: Table ParticleEffectNames is full, can't add d_muzzle_smoke
Warning: Table ParticleEffectNames is full, can't add d_tracer_har_main
Warning: Table ParticleEffectNames is full, can't add d_muzzle_smoke (x39)
Warning: Table ParticleEffectNames is full, can't add combineball
Warning: Table ParticleEffectNames is full, can't add burning_character (x2)

What is going on here and has anyone else experienced the Red X tsunami?