R9 5950x with 4070 super fps lower than 20 fps(POE2)

My Spec
CPU: AMD Ryzen 9 5950x
RAM: 32 GB Bus 3200
GPU: 4070 super
SSD: WD_BLACK SN770

Setting
RENDERER: DirectX12
DYNAMIC RESOLUTION:True
WINDOW RESOLUTION: 2560 x 1440

DETAIL SETTING
All setting in detail are default

ADVANCED SETTING
NVIDIA REFLEX: On
TRIPLE-BUFFERING: True
Multithreading: True

Problem Detail
My pc too much laggy when i play in every map and act but mostly happen in endgame, My graph ingame cpu always 2-3 times more than gpu. Something fps are 10-15 fps.