https://www.amazon.com/dp/B003CFATNI
Should work for you.
Yep..Win 11 hates Killer network stuff. I got tired of the bad speed/download and got this network card to hold me over till they got it fixed. I like Win 11 but Killer network drivers don't. https://www.amazon.com/gp/product/B003CFATNI/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
N
Never tried fastlink from ISP. I wouldnt consider 40-60ish ping an issue. 80's is where you start running into issue. And, PTR also posed the same issue with my killer network card.
https://www.amazon.com/gp/product/B003CFATNI/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1