Rocket League micro stutters, lag and freezing on high end hardware

Hello everyone, i need help. My game has recently become unplayable and I can't figure out whats causing it. Let's start with my specs:

MSI VECTOR GP68 HX 12V Nvidia RTX 4080 Mobile I9-12900HX 16GB RAM - 4800 MT/s 1 TB SSD Full HD+ 144hz Wifi 6E Internet: 1gb/s download 100mb upload

Whenever i launch the game and join a match or go into training, micro stutters are visible and my 99% fps dorps often below 60 and even 30 fps. After about 20 seconds my fps drops to below 10 and then the game sometimes completely freezes. When in a match my ping is also raising to 150+ after a few seconds the game unfreezes but micro stutters remain. No ping issues outside of Rocket League, after freeze no ping issues in rocket league.

Other way more demanding games run fine.

I have tried many things to fix it, but without succes. Here are the things i tried to do: - swtitching from WiFi to ethernet - Completelly reinstalling graphic drivers and rolling back drivers - Reinstalling rocket league and steam - updating all drivers, including monitor - overclocking GPU, then back to default - run the game at lowest possible settings, micro stutters remain consistent - Disabling / re-enabling gaming overlays like windows game bar, Geforce experience - uninstalling GeForce experience - changing refresh rate and vsync in game - changing input buffer in game - changing settings in the nvidia control panel, like vertical sync, low latency mode, max frame rate. -disabling steam overlay -clearing steam broser data -MSI center: switching power profiles. No difference on extreme performance mode

Task manager shows that cpu usage is steady at 20-25% max GPU is steady at 35% Memory usage is at 75-80% and I've noticed steam webhelper takes up to 500mb of ram, however force closing it doesn't work as the process automatically re-opens.

I'm starting to think the issue is within rocket league but i haven't found any recent post of people experiencing the same issues i have. If anybody knows something, please help as I'm clueless on how to fix this. Upvotes would help, maybe a developer will see this and help. Thanks in advance.