Bluetooth and Wi-Fi interference issues on my laptop

I recently moved my desk to a different spot in the house, and now I’m dealing with two headaches: both my router and my Hi-Fi setup are too far away to run a hardwired connection to my laptop. I have fiber optic service with speeds up to 100 Mbps, which is plenty. When I connect via Wi-Fi, I don't quite hit that top speed—it usually hovers around 80 to 90 Mbps, which I can live with. However, things go south when I pair via Bluetooth to an Amazon Echo Dot that's hooked up to my amplifier to stream music. As soon as I do that, my internet speed plummets to about 10–13 Mbps. Not only is it incredibly slow, but the audio starts stuttering, and if I try to actually use the bandwidth for anything else, like downloading torrents, the sound just cuts out entirely.

What kind of absolute nonsense is this? Is there actually a fix for this mess? My backup plan would be streaming over Wi-Fi using the DLNA protocol to a headless audio server I’ve got running, but the latency is massive—we're talking several seconds of delay—making it completely useless if I'm trying to sync it with video or anything else.

My laptop is a Dell XPS 15 running a dual boot of Windows 10 and Ubuntu GNOME 16.04 (the issue persists regardless of the OS), and the Wi-Fi card is an Intel dual band wireless AC 7260. Interestingly, when I check the Device Manager, I see two separate "Bluetooth device" entries listed under "Network adapters."

How far away are you from the router? It’s wild to me that your Wi-Fi signal is weak enough for even Bluetooth to mess with it. If distance is the issue, honestly, just grab a Wi-Fi range extender. It'll probably run you about 120-$50 more than a basic adapter, but isn't it better than being tethered to your laptop all day? Such a shame to have decent internet and not actually be able to use it. Also, definitely check your router settings—some of them default to a power save mode that throttles the signal strength.

I’ve been tinkering with my router settings lately because the signal was driving me crazy. Honestly, it never even crossed my mind that Bluetooth could be such a massive interference hog. Before I moved my desk, I had it constantly connected to a Bluetooth receiver, and the speeds were just abysmal. It wasn't until I stumbled upon the fact that everything stabilizes the second I kill the Bluetooth connection that I realized what was happening. The catch? I'm stuck using an older Netgear Router that doesn't support 5 GHz—which would likely solve everything since Bluetooth runs on the 2.4 GHz band, if my memory serves me right. I tried playing around with different channels, but it didn't yield much of an improvement. I've already disabled power saving, too.

Originally, the router was in a different room because that's where my fiber optic line comes in, but once I relocated my desk to the living room, I decided to run an Ethernet cable through the window via the patio. Now the Netgear Router is sitting right there in the living room. It’s maybe five feet away from my setup, and the Wi-Fi signal is showing full bars.

Bluetooth runs on the 2.4 GHz band by default. Look, you went with the cheapest route by just moving furniture around—didn't even have to drill any holes, which is a win—but still, two meters isn't exactly a huge distance... Is the Bluetooth actually tanking your speeds just on the laptop, or does it mess with your phone or tablet too? Like, have you tried running a Speedtest by Ookla on those other devices while the Bluetooth is active?

I'll give it a shot on my phone later today once I get home from work. For a little while, I used to stream via Bluetooth, but I never actually bothered to run a Speedtest. These days, if I’m listening to music, I mostly just rely on DLNA.

It isn't exactly a life-or-death matter for me—I usually pull my music from an audio server running a Raspberry Pi—but every now and then I want to catch a video on YouTube or listen to something else via Bluetooth. It beats the hell out of dragging Ethernet and audio cables across the entire apartment.😬

Just try to pin down where the actual issue lies—is it the router or the Wi-Fi? I'm leaning more toward the latter... Look, I get it. You aren't exactly power-using it, but you still want the damn thing to actually work when you need it to. No need to explain yourself, I totally get where you're coming from. 😁

I tested this on my phone too, and it’s doing the exact same thing—just messing around. Here is a screenshot showing the last six readings from the top down. First, I ran it without Bluetooth enabled. Then came two tests with Bluetooth turned on, though no music was actually playing (I repeated the measurement because it dipped to 50, but it bounced back). Following that, you see those two low numbers while the music is streaming—it was jumping around quite a bit during the test, dropping to 5-8 Mbps at times. Finally, once I killed the Bluetooth connection, it shot right back up to 90+ Mbps.

Now, that actually worried me a little. I figured there was a slim chance this was caused by some internal resource sharing between the Bluetooth and Wi-Fi components inside a single device—like they share an antenna, a chip, or a bus—but since we're talking about two completely different devices here, I didn't expect a correlation. However, I just tried streaming music from my phone via Bluetooth while measuring the speed on my laptop (running Ubuntu), and it clocked in at a steady 66 Mbps.

It occurred to me that I have an old, cheap Chinese Wi-Fi range extender lying around somewhere with a blown power supply. As a temporary fix, I might try to scavenge an old mobile charger to revive that thing, let it pick up the Wi-Fi, and then just hardwire it via Ethernet.

Long-term, though, I really ought to invest in a decent router instead of relying on this junk that AT&T hands out. I was looking at some Asus models with four antennas that support 5 GHz and pretty much every other standard, but they go for about $110. Alternatively, I could just buy one of those thin, flat Ethernet cables and snake it along the floor.

But purely for my own curiosity now: why on earth do Bluetooth and Wi-Fi fight so violently when they're inside the same device?

Man, AT&T tried that same cheap hardware trick on me twice—gave me some budget setup that was nothing but headaches. The technician back then just brushed it off, saying they weren't even expensive and we should just try them out first... total nonsense. Eventually, I insisted and they swapped it out for some newer Siemens routers, and honestly, I haven't had a single issue since. Just give AT&T a call and tell them you need a different router because yours keeps freezing up on you. Tell the tech straight up that you want the Siemens model instead.

The screenshot link isn't working for you 🙂 I was thinking maybe it’s some hardware glitch, but honestly, once I realized we were talking about a pretty high-end laptop, my mind went straight to the router. So, the big question is: how much coverage are you actually getting from that extender? And can you just plug it into a phone charger, or are you going to have to hunt down some random power brick from another setup?

AT&T is literally handing out used Siemens SX763 routers today that are basically ancient relics from a decade ago. And look, Asus is a budget brand at best—their routers run anywhere from $117 up to maybe $150, though there are pricier ones if you're looking outside the US market. You should probably check out eBay or some more reliable tech forums; there are plenty of people selling brand-new routers for like a hundred bucks.

It doesn't matter what kind of router you're rocking or how much speed you're paying for—if you're running on Bluetooth, you're going to hit interference issues and see those speeds tank.
The only real way out of this mess is to either ditch the Bluetooth entirely or just switch your Wi-Fi over to the 5GHz band.