My computers download is capped, whereas my wife can download full speed

[Kirika-]

What hardware does your computer use to connect to your modem?
Wi-Fi, Cat5/6 cable, USB, ???
What hardware does your wife's computer have in comparison?
What is the make/model of the modem/router you have?

A Cat5 or Cat6 cable, generally means you have the fastest possible connection to the router/modem, most all current systems are Gigabit connections, max capacity of 1000Mbps. You have a cable that plugs into your computer and into the modem/router, the cable looks like a bit bigger telephone wire.
Wi-Fi, on the other hand has several radio hardware versions, with speeds as low as 11Mbps for 802.11b hardware to around 866Mbps for 802.11ac wave1 hardware (there are some very new Wi-Fi hardware with speeds over double of Cat5/6, but it is very very uncommon to find routers/modem with that hardware and less to find PCs/Laptops with it), so if you happen to use Wi-Fi and your hardware is dated, you speeds will be very slow as compared to someone with current technology. Further, the radio frequency can effect data speed, not by much but in some cases a lot when factoring in other variables (like distance, walls or floors between computer and Wi-Fi router, or RF interference)... 2.4ghz radio has better range and ability to work through walls/floors, but can't carry as much data as 5ghz, of which has a real hard time with walls/floors and doesn't have a whole lot of range.

If your both on Wi-Fi and she is closer to the router/modem, has better radio hardware, and is on 5ghz frequency, she could have a faster speed than you if your further way, have lesser hardware, and are on 2.4ghz.

Other forms of network connections also use your computer's CPU as the data processor, which on a system with older or less powerful system components can result in slow data speeds even if the network hardware is current.
There are also forms of USB wired networking, which are generally pretty fast, but suffer performance hits greatly when other USB devices are also running on the same host that use a large data stream, like gaming mice and/or headset.

[GoronMan]

What hardware does your computer use to connect to your modem?
Wi-Fi, Cat5/6 cable, USB, ???
What hardware does your wife's computer have in comparison?
What is the make/model of the modem/router you have?

A Cat5 or Cat6 cable, generally means you have the fastest possible connection to the router/modem, most all current systems are Gigabit connections, max capacity of 1000Mbps. You have a cable that plugs into your computer and into the modem/router, the cable looks like a bit bigger telephone wire.
Wi-Fi, on the other hand has several radio hardware versions, with speeds as low as 11Mbps for 802.11b hardware to around 866Mbps for 802.11ac wave1 hardware (there are some very new Wi-Fi hardware with speeds over double of Cat5/6, but it is very very uncommon to find routers/modem with that hardware and less to find PCs/Laptops with it), so if you happen to use Wi-Fi and your hardware is dated, you speeds will be very slow as compared to someone with current technology. Further, the radio frequency can effect data speed, not by much but in some cases a lot when factoring in other variables (like distance, walls or floors between computer and Wi-Fi router, or RF interference)... 2.4ghz radio has better range and ability to work through walls/floors, but can't carry as much data as 5ghz, of which has a real hard time with walls/floors and doesn't have a whole lot of range.

If your both on Wi-Fi and she is closer to the router/modem, has better radio hardware, and is on 5ghz frequency, she could have a faster speed than you if your further way, have lesser hardware, and are on 2.4ghz.

Other forms of network connections also use your computer's CPU as the data processor, which on a system with older or less powerful system components can result in slow data speeds even if the network hardware is current.
There are also forms of USB wired networking, which are generally pretty fast, but suffer performance hits greatly when other USB devices are also running on the same host that use a large data stream, like gaming mice and/or headset.

Both connected via cat 6. Computers are exactly the same, I built both of them.

[Kirika-]

Double check the router's LAN settings and make sure your computer's IP isn't set to a lesser priority bandwidth than your wife's, or some other device on the LAN.
Setting like Media Prioritization on one device can wind up throttling other devices.

If your on Windows 10, double check this setting to make sure it isn't enabled:
https://support.microsoft.com/en-us/...c-802b4dd44e51

[GoronMan]

Double check the router's LAN settings and make sure your computer's IP isn't set to a lesser priority bandwidth than your wife's, or some other device on the LAN.
Setting like Media Prioritization on one device can wind up throttling other devices.

If your on Windows 10, double check this setting to make sure it isn't enabled:
https://support.microsoft.com/en-us/...c-802b4dd44e51

I cant imagine this can eb the case, because when downloading steam games, or anything else. I have a normal download, but I can check.