Severe framerate-drops while using plague's power

Micc

Playing plague in a public match, on sanctum of wrath. Playstation 4

Experienced severe framedrops whenever using plague's power. Didn't matter whether it was corrupt purge or vile purge. Happened every time when using the power, no matter where it was or what the purge hit/if it hit anything.

Video attached.

https://youtu.be/641HHTkImsA