before i start, im not sure about hardware version or firmware version. i bought this card last year at amazon. TP-Link 10/100/1000Mbps Gigabit PCI Network Adapter/Card, Includes Low-profile Bracket (TG-3269)

So ever since i got this card, my download speed has topped out at around 20mbps ish. this isn't my internet, it belongs to a family member, so i figured that was probably normal cause i didnt know the speed.

a month or 2 ago i was downloading a game from microsoft in which i seen my speed hit around 150mbps. which made my curious. i found a page on how to speed up your internet and tried changing some settings which pushed my speed up to around 50+ mbps. (for a few days).

next thing i know my download speed has since been capped at around 10mbps. today was trying to download a game from steam and out of frustration i decide to contact my isp. (comcast) i told him i dont know our speed package but feel like my speeds should be much faster. he says i have i think he called it the burst package. (250mbps)

they tried some things from their end and said the changes might take up to 30 minutes to take effect. he then asked would i like to schedule a technician just incase it doesnt work, so i said yes. the changes made didnt help. 30 minutes later the technician shows up and asks for my password, logs into my network and he gets 250mbps. he says he'll check some things out outside but is pretty sure the problem is on my pc end. he then went outside, i heard like drilling noises or something for awhile, and later left.

so... now im stuck, i checked out various webpages and played around with different settings they recommend and then i uninstalled and re-installed the driver and applied update.

so now the only change i have made is ARP offload: Disabled. which is currently giving me 30mbps.

i really could use some help here. please. obviously i should be getting much higher speed. 250mbps would be awesome, but i'd be happy if i could even just get 80.

thanks in advance.

#EDIT# oh and i forgot to mention i set full duplex mode up to 1GBPS. #EDIT#

also, here are some settings you might wanna know....

PS C:\WINDOWS\system32> netsh interface tcp show global
Querying active state...

TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State          : enabled
Receive Window Auto-Tuning Level    : normal
Add-On Congestion Control Provider  : default
ECN Capability                      : disabled
RFC 1323 Timestamps                 : disabled
Initial RTO                         : 1000
Receive Segment Coalescing State    : enabled
Non Sack Rtt Resiliency             : disabled
Max SYN Retransmissions             : 4
Fast Open                           : enabled
Fast Open Fallback                  : enabled
HyStart                             : enabled
Pacing Profile                      : off