Very high-end gaming PC, Lower FPS than my old PC, tried every possible settings?

My old PC I used to have around 144+ FPS steady on max settings, even during teamfights. **Old pc: ** i7 4790 GTX 970 New PC is hovering around 80-120 depending on the state of the game: **New PC:** AMD Threadripper 1920X Gigabyte Aorus 1080Ti 32gb DDR4 3200 Mhz I tried every different setting on my PC, in league, in the nvidia control panel, re-installed league, re-installed windows. Did everything you can imagen but nothing helps. It also seems to be a common problem as I found more people describing exactly the same experience. Looking at pro streamers/youtubers like imaqtpie/redmercy/shiptur I see the same problem over and over. They all also hover around 80-120 fps, and they all have high-end gaming PC's with different CPU/GPU setups. Upgraded PC and get reduced FPS.... it shouldn't be this way, but it seems high-end pc's aren't optimized for league at all?
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