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Getting high upload MS but speeds are fine, causing excruciating lag on multiple devices.
Processor Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz 3.70 GHz
Installed RAM 16.0 GB
System type 64-bit operating system, x64-based processor
Edition Windows 10 Home
OS build 19043.1826
Experience Windows Feature Experience Pack 120.2212.4180.0
Modem: Motorola model MB8600
Router: Spectrum WIFI 6 Router
Intel(R) Xeon(R) E3 - 1200/1500 v5/6th Gen Intel(R) Core(TM) PCIe Controller (x16) -1901
Intel(R) Ethernet Connection (7) I219-V
I'm on Spectrum 500/20 plan. And while the upload and download speeds are fine, it seems once I get under load, the upload latency starts creeping up, and it will get as high as 500ms until the end the of the test. (Using speedtest.net)
As of right now, I'm directly connected to my PC from the modem, but had the same issues when I had my PC wired into the router.
I should note that this issue is happening on my Iphones, games on my phone, our firestick, etc.
I'm not sure how to check how many devices are currently connected to the network, but I have before, ensured anything that could transmit a signal was turned off and unplugged (not sure if that actually dropped them from the network or not).
I hope this is everything needed, as this is my 1st post, but I can provide more information if needed (which I'm sure will be). I'm not too savvy with networks, so please bear my ignorance as I'm trying to fix this, as well as learn in the process.
When running the speedtest it shows the latency for download and the latency for upload.
From what I see is that at the beginning of the speedtest my upload latency is lets say 20 ms, but by the time the speedtest is finished it's at 2000 ms.
When I'm in a game such as league of legends, or fortnite, etc. I have around 83ms, and then randomly out of nowhere I go up to 300ms, and then it just starts bouncing around from there.
*NOTE: Spectrum did send a technician out, and said that all of the signals and connections look good as far as from the outside to the house, and from the house to the modem.