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CAX30 Throttling my ethernet connection. But Wifi is fast.
Apologies as i'm not super technically savvy, but:
Only recently noticed that the speed of the connection to my desktop (measured via speedtest.net) would drop down to around 100-150Mbps, when I'm under Comcast's 800Mbps plan. My wi-fi is surprisingly fast, sometimes hitting 900Mbps for whatever reason, using the same CAX30 router. My desktop is directly connected to the CAX30 and I even bought a brand new cat 5e cable. Unplugging the power and restarting the modem would solve the issue temporarily. Minutes later, I'd drop back down to the 150Mbps.
Did a factory reset. Same outcome.
Spoke to Comcast support and they say on their end they're seeing a "DOCSIS health issue" of some sort. So, since I was still under my Best Buy protection plan, i took the router back and got a replacement unit (brand new) today and installed it, had Comcast activate the modem, and at first, it worked fine. But then, hours later this time, it reverts back down to 150Mbps.
So now, it's either the coax cable (which i don't really think it is since the wi-fi signal is still so fast), or some sort of software issue in the modem that is throttling my speeds. Anyone encounter this with theirs?
Note:
- my firmware is updated, ver. 2.2.2.2
- I've also reset my network settings on my pc, which also resulted in a temporary fix, but then it reverted back to being slow
- I tried turning on and then off the throttle box in the Netgear app itself, didn't work
4 Replies
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If the wifi is still hitting 900mbps, it isn't the modem side.
Do you have a different ethernet device you can test it with?
Your behavior seems device specific and that makes me suspicious of that device.
Unfortunately I don't have another device. This is literally the second CAX30 that I'm experiencing the same issue with. I thought it was maybe an issue with the previous router, but nope. That's why it feels like it's CAX30 specific, as in some sort of software bug/compatibility issue. I'm hoping it's something with the coax wire that Comcast can remedy, but wondering if any experts here might know or if any here have experienced the same thing.
when 2 devices have the exact same issue, it makes me suspicious of whats connected to it. Like the pc. Since the wifi is performing as it should, it makes me think the pc is the issue. Thats why I asked if you had another wired device you could test. Or borrow to test. Or pickup a usb/ethernet adapter to test with
