Memory leak

When running maps I start with stable 60fps (I have them locked at max 60), the further I progress the map the less fps i experience with 30-45fps at the end when mobs are around. Also crashes are quite common as well. When I clean the map i have stable under60 fps, after leaving and re-entering the map they go back to stable and smooth 60.
It happens on every map i run.
I was running different content - Harvest, Ritual, Betrayal, Harbringers, Delirium and Breach, with ritual being in most of my maps with low performance.
I am using Cyclone of Tumult with links: Impale, Shockwave, Pulverise, Awa Brutality and Awa Melee phys dmg.
The more content and mobs there were the more severe the problem was.
I believe its either the cyclone or shockwave.
Tested it with DirectX11 and DirectX12. Same results
Here is screenshot after finishing map (breach only)

Here is image after i reentered the map

Here is image of me doing just random abyss


My PC specs are
GPU: GeForce RTX 3070
CPU: Intel Core i5-10600KF
RAM: 16GB

My game settings: