Packet loss and weak throughput is often caused by weak antenna design. Good news: You can replace the built-in antenna of your router with something much more powerful. It's a bit of a hassle, but it may make the difference between a slow connection (or none at all) and a speedy line to your router!

Depending on your setup, you'll want to go with either an that scatters the signal throughout your home or a if most of the devices that are in need for good throughput are in one room. Probably the best and most extensive guide for replacing antennas is .

Use a Wi-Fi heatmapping tool to measure the impact of distance, frequency changes and building structures on signal strength. Two tools that are great for this job are and for Windows. Both tools allow you to track Wi-Fi coverage in your office or home. In this example, we're going to show you how NetSpot works: Once you've installed the software, type in a new "Site Survey" name and hit "Blank Map". You can also select a floor plan of your home or office and get an exact map. If you're more creative, I suggest you select the "Draw Map" feature and start drawing your own floor plan. Next, define the scale by determining the exact distance between two spots. Hit "Let's get started" and just walk around. Click the spot on the floor plan that you're currently standing in:

Obviously, the more points you scan, the more exact your Wi-Fi heatmap. Once you're done, you end up with a map that shows you not just the signal strength but also the throughput of your Wi-Fi network.