PC - Virulent Bound Grabs count as losing the chase
When playing as Wesker / The Mastermind, a Virulent Bound use that grabs the survivor appears to count as losing the chase for the purpose of Emblems. I have played more than a dozen matches, and no matter how many short chases I have won I have never gone above Bronze Chaser until I stopped using his power on injured survivors.
I noticed this in five different matches where I received iridescent in every category aside from a bronze Chaser. Once I stopped using his power on injured survivors and picked them up normally, I was able to score in the Chaser category.
Most, if not all, of my score screens looked like this. It occurs consistently in every match.

Comments
Yeah Wesker's Chase points is def broken. In 10 games with Wesker, got 3 3k, and 7 4k, no lost chases, no tunneling or camping, and getting only Silver or Golds in Chaser. Played a whole game without using my power to attack anyone and it's the only game I got irid on.