I fixed my Crappy WiFi on my new Lenovo Legion 5! Since day one the WiFi on my new laptop sucked. At best I could only get 400ish Mbps while all mt other computers and laptops were 750+ at the same connection. This just was not for me. So I researched for problems and found I am not alone. It turns out the issue is the so so MediaTek MT7925 card. SO I searched some more and found that the Intel Killer BE200 1750X to be the better card to use. A little search later sourced one on Amazon for $31.75 USD. 24 hours later it shows up on my door, 30 minutes later I am testing it. BAMM! it hits my network throttle of just over 1g and settles in at a 871.97 and climbing!
To say i am happy does not even cover it. I am fairly sure Lenovo chose the MediaTek chip as it works with Intel and AMD and the BE200 is known to not play well with AMD. BUT I could not live with it.
In the end if you have an Intel CPU and crappy WiFi as I did give this a shot. Well worth the $35 delivered for sure!