Random FPS Stutter (Stuck at 30-40FPS) With PC Restart

My Current Setup
CPU : i7-8700K
GPU : RTX 2080ti
RAM : Delta RGB T-Force 3200Mhz - 16GB X 2 (32GB)
Motherboard : Maximus X Hero

Hi all, I bought Battlefield 6 from Steam, during the Battlefield 6 Beta & Official Launch my gameplay has no issue, it has been stable at 70+/-fps, but sometimes when i start my pc and get into games it will stuck & stutter at 30-40 fps for no reason. I will need to restart my PC to get 70fps again but sometimes it doesn't work and still stuck at 30-40 fps. I will have to keep restarting over and over again to get to stable 70fps gameplay.

But recently I have no luck for days since Saturday 1.11.2025, it has been stuck at 30-40fps no matter how many times i restarted my PC.

I did a lot of googling, tweaking my PC system, here's what i did so far..
1) Delete shader cache (Nvdia)
2) Delete shader cache (Battlefield 6)
3) Create user.cfg file (Some said user.cfg doesn't work and need User.cfg instead)
4) Create User.cfg file   
5) Enable XMP Profile
6) Overclocking my CPU / Revert back to Original Setting In Bios
7) Reinstalling Nvdia Driver (Nvidia App)
8) Reinstalling Nvidia Driver (DDU)
9) Optimizing Windows For Gaming (Include Service.msc / Regedit)
https://www.youtube.com/watch?v=qRYr9VNQGhg&list=PL2dDQhyjI-i-pad3DnPgZhpTX5y9-DWT_
10) Disable / Enable Hardware Scheduling, Variable Refresh Rate, Optimization for Windows Games
11) Update latest chipset (Official website)
12) Update latest bios (Official website)
13) Optimizing Nvidia Control Panel in Manage 3D Setting
14) Setting Battlefield.exe to High Performance in Windows
15) Clearing %temp% in PC
16) Overclocking my GPU using Nvidia App (+200mhz) I think
17) Reseat my Ram x2 and GPU
18) Using Copilot / Chatgpt / Google Gemini using HWinfo and Mentioned no problem with CPU/GPU
19) Steam verify integrity game files to validate and reacquired
20) Reinstalling new Chipset (Official website)
21) Enable / Disable Steam Overlay, EA Overlay, Nvidia Overlay
22) Enable / Disable Fullscreen Optimization in bf6.exe
23) Install new DirectX
24) Set bf.exe Compatibility Mode Windows 8 / Run as Admin / Disable Fullscreen Optimization
25) Checked if Manage 3D Setting Auto set a Profile For BF6.exe
26) Run sfc scannow / Image Repair 
27) Ran registry repair with 3rd party download
28) Edit PROFSAVE Profile With Notepad
29) Set Nvidia Shader Cache to 100gb
30) Upgrading 16GB (3466mhz) Ram - 32 GB Ram (3200mhz)
31) Uninstalled Redsec DLC & Try Playing / Reinstalled Redsec DLC
32) Reformat PC (Reset PC - Remove Everything)

Totally no changes on the FPS.. still suckkkk!!!

I've played 
Battlefield 4 (No Problem)
Battlefield Hardline (No Problem)
Battlefield 1 (No Problem)
Battlefield V (No Problem)
Battlefield 2042 (No Problem)
Battlefield 6 (Problem)

I don't encounter any problems when running other games too (200+ games in steam), So far it is only Battlefield 6. I'm really frustrated and I don't know what to do anymore, I'm trying to get the game to run normally like before for 3 days straight. If someone has a fix or know what to do, Please do give me some pointers. I'm not sure if it's my PC Issue or Battlefield 6's Issue.

I just want to playyy 😞😞😞😞