Slow speed on Realtek PCIe FE Family Controller - HP Pavilion 64 bit

Slow speed on Realtek PCIe FE Family Controller - HP Pavilion 64 bit

I recently upgraded my internet speed to 90 mbs but when I run a speedtest
on my computer, it never gets over 50 mbs. I've had the ISP company over
here a few times, they've tested everything and have shown that the
internet speed is in fact 90 mbs and sometimes even 100 mbs but their
thought is that my ethernet and wireless ports on my HP can't accept or
run at those faster speeds. Also, just to confirm my speed, I connected
the ethernet to a dell laptop and sure enough, it's running at the 90 and
100 mbs.
I've tried playing around with the settings on the network adapter Realtek
PCIe FE Family Controller, adjusting to auto, 100/Full Duplex, 100/Half
Duplex, 10/full, 10/half but my internet speed never changes. So, is there
a setting or some other update for this issue?