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Enormous lag spikes and disconnects from WAN
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Hovawart posted this in #questions
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HovawartOP
Hello, I am hosting a minecraft (forge) server with a coupoe of mods, for me and 3 friends of mine. The problem is, my friends often experience big lag spikes, not consistant lag, and get disconnected every couple of minutes, most often with connection timed out. However i play via my local network and i have none of these issues.
They play using my public IP and port 25565, i have configured both tcp and udpnport forwarded
The server is hosted in a Ubuntu server vm hosted in proxmox, running crafty, but that doesnt seem the problem because as i said on the local network there is no lag.
I replaced my router (it was planned for a while) but it didnt make a big difference, so that doesnt seem like the problem. The new router is a unify dream router 7.
I made sure I prioritized the server with QoS, and enabled smart queues with 90% of my bandwidth to my ISP
Chatgpt said i should do a bufferbloat test, see the results in the image. With a normal speedtest my upload bandwith is around 250 Mbit/s
Does anyone have an idea of what could've cause these issues? Thanks!
They play using my public IP and port 25565, i have configured both tcp and udpnport forwarded
The server is hosted in a Ubuntu server vm hosted in proxmox, running crafty, but that doesnt seem the problem because as i said on the local network there is no lag.
I replaced my router (it was planned for a while) but it didnt make a big difference, so that doesnt seem like the problem. The new router is a unify dream router 7.
I made sure I prioritized the server with QoS, and enabled smart queues with 90% of my bandwidth to my ISP
Chatgpt said i should do a bufferbloat test, see the results in the image. With a normal speedtest my upload bandwith is around 250 Mbit/s
Does anyone have an idea of what could've cause these issues? Thanks!
q76wtc5ig9vf1.png
@xld uhhh is the upload speed is supposed to be this low?
Asian black bear
I pointed that out on the subreddit
He said it was just one test like this
from my perspective, the fact it ever shows this low of upload means you’re probably hitting that low while the server is running, and it’s affecting your players
Asian black bear
They use ethernet (supposedly) 
@xld uhhh is the upload speed is supposed to be this low?
Most ISP’s don’t offer symmetrical internet speeds. it’s very normal to have high down and a lil slow up like 30-50mbps
it’s tbf all you need. if you stream you’d need at most 30mbps up
it’s tbf all you need. if you stream you’d need at most 30mbps up
eh
Bluetick Coonhound
A significantly lower upload speed usually indicates coax instead of fiber
HovawartOP
No, it is on ethernet, yes i have symetrical upload see screenshot
image.png
Also, I have fiber
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