Game Freezes my PC completely?

I'm having problems with Planet Zoo. While playing Planet Zoo with the brand new PC I got for myself, the PC completely freezes up after a few minutes of playing.

Things like opening the Task manager or ctrl+alt+delete didn't work, only completely hard restarting the PC by holding the power button. It happened multiple times, only very rarely it unfreezes by itself after a few minutes.

This all started after I installed 2 more DLCs to my already existing DLCs. The DLCs are: Conservation and Eurasia DLCs

I've tried many things but can't find a way to fix the problem. Can someone help me please?

I've searched the internet and these are the things I've already tried:

- I've checked the event logs and there's nothing I'd identify as a crash

- reinstalling the game completely new (with DLCs)

- reinstalling the game without the two new DLCs (Conservation and Eurasia)

- reinstalling my GPU driver

- I tested my RAM with Windows memory diagnosis (nothing found)

- I run the sfc scan (nothing found)

- Installed a older version of my GPU Driver

- I run the steam game data test: Verify integrity of game files

- I tried running the game on Windows 8 and 7 compatibility mode, but it only worked on 7.

And it stopped working the next day.

My PC specs are:

- Nvidia GeForce RTX 5070

- AMD Ryzen 7 7800X3D 8-Core

- Samsung SSD 990 Pro 1TB

- G.Skill Trident Z5 DDR5-6000 DIMM (2x 16GB)

- Motherboard: Gigabyte AORUS AMD B850