spotty internet on one device everything else is fine.

[tonethepony3]

My desktop will run smoothly for about 20-30 seconds and then i will have a 5-15 second interval of no internet and lag. I have an Xbox one and a laptop and a tablet that all use the internet perfectly so i'm lead to believe its a hardware problem.

 

[Ralston18]

Loose connection perhaps?

Built-in wireless adapter, PCIe, or USB wireless adapter? Make and model, how old?

If USB, does the adapter feel overly warm or even hot?

Any antenna's? Check that the antennas are fully connected and oriented.

Try using a USB extension cable to raise the adapter out and up from behind the desktop. May improve signal reception and also help to keep the adapter a bit cooler.