Omen Laptop cannot get proper speeds

[Cameron2007a]

So I have seen several issues on here about people complaining the speed is not as fast as it should be with the Realtek Gigabit network adapters.  I saw the response from HP saying it was a router issue.  I can tell you that it is not a router issue, a driver issue or anything else that they said the issue can be it is this network adapter on the Omen laptop or something in the MB.   I can unplug this laptop that is only getting 200MB on a GB wired network to GB Fiber and hook up my brother\s Lenovo Legion,  My Dads Dell XPS and they are getting 986 Mb up and down no issues I plug back in and I can only get 200 and 200.  This is not cool HP.  Even your Tech Support could not figure it out, They even had me do a full factory reset on the machine,  reinstall off of windows media, and nothing.   Very very Disappointed that your laptop's network adapter cannot get the speeds it promises.  This laptop is just out of warranty so I am really pissed that this is happening.

[itsmyname]

@Cameron2007a -- most "speed test" apps require a fast processor -- more than 3 Ghz to test a Gigabit connection.

So, what is the CPU speed for the Omen laptop

What is the CPU speed for the Lenovo Legion?

What is the CPU speed for the Dell XPS?

Note that 1 gigabit (a very large power of 10) is often expressed as 986 (a very large power of 2).

So, some of the computers are handling 1,000,000,000 bits per second.

[Cameron2007a]

The CPU is an 

i7-10750H

Same CPU on The Lenovo

and an i5 11600 on the XPS.

This one when I use the internal hard-wired RJ-45 Jack gets 250 Mbps Down, and around 98 Mbps Up.

If I hook an external USB Adapter to it  ALSO a REALTEK CHIP  I am getting 980Mbps Down and 910Mbps Up.  It is the internal Card on the Laptop that is the issue.  We have tried updating the driver, reloading the laptop, and nothing fixes the speed issue.  I should also mention my Dad is an HP Enterprise Certified repair tech but cannot get home parts to fix it.   But all roads point to internal NIC being garbage.