I've been seeing some very odd Minecraft behavior on our home LAN. We start to get very noticable lag if multiple people (2-4 people) are playing Minecraft at the same time, even if they are on completely different servers which use different ports. Ingame we'll see rubberbanding and a lot of problems opening doors and activating switches. We'll also sometimes have problems breaking blocks (with them repopping).
All of the computers involved are Windows 7 computers with the latest version of 64-bit java (7u21). All of the computers involved are reasonably powerful (the slowest is a 2.4ghz dual core laptop with 4 GB RAM and an nVidia 7900 mobile, the most powerful is an i7 920 OC'd to 3.8ghz with 12 GBs RAM and dual Ati 4870's).
We have a mixed of wired (all gigabit) and wireless (N at 2.4ghz single channel) on our network, but that doesn't seem to be related, as both wired and wireless users will experience this lag. Our router is an Asus N16, running TomatoUSB with mostly default settings. Our internet connection is good (cable 40 mbps down, 10 up, usually very fast and reliable).
...so I'm really at a loss as to where this lag is coming from. Everything I can think to check looks great. Does anyone know what might be going on?
It's typical that you will experience lag when multiple people are playing on servers on one network as you're all sharing the one internet connection.
Understood... but is there anything I can do about it? We've seen some debilitating lag with as few as three players, even if they are all on different servers. QoS settings? Bandwidth limiting? Ect?
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All of the computers involved are Windows 7 computers with the latest version of 64-bit java (7u21). All of the computers involved are reasonably powerful (the slowest is a 2.4ghz dual core laptop with 4 GB RAM and an nVidia 7900 mobile, the most powerful is an i7 920 OC'd to 3.8ghz with 12 GBs RAM and dual Ati 4870's).
We have a mixed of wired (all gigabit) and wireless (N at 2.4ghz single channel) on our network, but that doesn't seem to be related, as both wired and wireless users will experience this lag. Our router is an Asus N16, running TomatoUSB with mostly default settings. Our internet connection is good (cable 40 mbps down, 10 up, usually very fast and reliable).
...so I'm really at a loss as to where this lag is coming from. Everything I can think to check looks great. Does anyone know what might be going on?
Stu