XCP Down cut leaving too much dust residue

Having an issue with too much dust residue building up with down cut 2 flute end mill bit (picture attached). Any suggestions? The residue build up stopped production twice today and I think it is because the down cut is steadily pushing the wood dust down while the suction system is not able to get it out of the carve.

Specs -

  • XCP 4 x 4
  • 1" BBCP Plywood
  • 1/4" / 1/4" Rockler down bit
  • industrial vacuum exhaust connected to XCP

Thanks.