DW1525 network card in Dell 8100XPS slow speed

Don't know where to start. I'm thinking I either need a new computer or at least a new card? I have a 2010 model 8100XPS Dell with the DW1525 network card and 2 antennas. I have been experiencing slow internet speeds lately and thought the cause might have been the internet provider (Mediacom). I have a Netgear R8000 nighthawk router and I have upgraded my internet through my provider to 100 Mbs download speed. Both my boys Apple laptops when a speedtest.net is run are achieving almost 90Mbs download speeds which is acceptable since the wired connection is only about 94 Mbs. BUT, my Dell is only in the mid 20'sMbs download and sometimes hits 30Mbs download speeds. I think I saw it once hit close to 50 but I might be mistaken.

What do I need to do to achieve a higher download speed? The upload speed is right in line where it should be based on the internet plan I am on. It is just the download speed I am having trouble with.

Any thoughts? Need a new card? New computer LOL? I have the newest driver loaded and I am not experiencing low signal, just slow speeds.

Thx

Kevin

It is the Atheros DW1525 wireless card with the 2 antennas. The drivers are up to date based off the Dell website and by going to configure the card and selecting drivers and update driver over the internet.

I don't know what the wired results are on this computer as there is no way to hook it up wired unless I take an hour and move everything in to the room with my modem and router or I get a 30' Ethernet cable.

I hooked my ancient laptop that is running XP with a wired connection to the back of the router and was able to get like 94Mbps along with my boys Apple laptops wirelessly are able to connect in the high 80's to low 90's.

That is the driver I have installed. I just checked.

Think it is the card?

Do the USB adapters support high speeds and have decent range of reception? I need about 25 to 30' line of sight.

Kevin

I am from the Iowa, United States.

Think it is the card I have then?

I did notice the only laptop I have which is a dinosaur running XP that wired it is 94Mbps but wirelessly it is also way slow like my Dell. The laptop can only reach mid 20s. I can understand that though because it might have a wireless card that does not support higher speeds. I have not checked though because I never use it anymore.

thx for the advise and help!

I appreciate it!

Kevin