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CS2 running terrible on external display connected to my Strix ROG Scar 17

Level 7

Hi, so, I've battling with this issue for some time and I can't fix it. The main problem is, that CS2 runs really laggy, stuttery (low fps) on my external monitor, that I have connected to my laptop. When I play the game on my laptop monitor, everything is working fine. But I don't want to play my game on a 17 inch laptop screen when I am home.

My laptop specs: Asus ROG Scar 17 (3070Ti; i9-12900h, 32gb RAM).
My monitor: Samsung Odyssey G7 (32inch).

My monitor can run 240hz on DP, but my laptop doesn't have DP, so I have it connected with HDMI. In all the settings, it says that my laptop is running 144hz, which would be fine, but the thing is that, CS2 is really stuttery and feels like 30-60 fps (fullscreen enabled).

I also have tried 2 different HDMI cables, that didn't change anything. I have suspicions that it is something to do with HDMI port/cables. Since my laptop have HDMI 2.1, but monitor does not. I am really lost, any help would be appreciated.