So yesterday I bought a Ethernet to usb 3.0 adapter for my laptop and when I do a speed test on Ethernet as soon as i plug it in i get 200 mbps but then over time in like a minute it just starts to decrease down to the lowest I have seen as 17 mbps but my upload remains the same. I tried updating the Ethernet driver and nothing changed any help? Im using the same Ethernet cable i use on my play station and i get around 150 to 180 making its fine there and my laptop has a usb 3.0 port. I also used the adapter on my nintendo switch and it works there at its max speed.