Mob spells that kill FPS (As I find them)

Just started playing yesterday, I’ll update this as I find them. I cap at 60fps. Whether I play on Very High or Very Low it’s exactly the same, no setting seems to affect these spells. They definitely need to be re-made/removed since I don’t have any issues elsewhere.

Drowned Visage: When he uses his spell that explodes into an aoe, FPS drops to around 35.

Primeval Dragon: When he uses his fireballs it drops to 30 FPS.

Imperial Welryn: Drops to about 40 FPS after it channels explosion.

Immortal Eye/Avian Chimera: When they use their multi-bolt and explosion(same as Imp. Welryn) skills drops to around 40 FPS.

Admiral Harton: Drops to around 50 FPS depending on his skill combinations.

Spymaster Zerrick: Drops to around 49 FPS when multiple poison pools are up.

Scalebane Sorcerer: Drops to around 45 FPS when they do poison spit, lower if there’s multiple.

Twisted Mire Zone: This whole map is bad. 40-50 FPS, averaging about 45.