I’m only getting 300 Mbits/s. I’m using iPerf to measure speed.
My gocoax PHY rates are attached.
why can’t I achieve full gig speeds? What am I doing wrong?
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Unknown member
Apr 28
There are a few factors that could be limiting your iPerf results over MoCA to 300 Mbps instead of reaching near gigabit speeds. First, check your gocoax PHY rates — if the negotiated PHY rate is below 1000 Mbps, that’s already your ceiling. Also, keep in mind that real throughput is usually about 60–70% of the PHY rate due to protocol overhead.
Other possible bottlenecks include coax cable quality, splitters (especially if they’re not MoCA 2.5+ rated), or interference from other devices. Also, ensure that your iPerf test isn’t being limited by endpoints — for example, make sure neither your PC nor the remote device is using Wi-Fi or has a slow NIC.
I’ve seen some users troubleshoot MoCA setups while multitasking other systems — even running lightweight online platforms like pgslot999 in the background — and while that shouldn’t affect iPerf directly, it’s still best to minimize background load when testing. You might also try running multiple parallel streams with iperf -P 4 to saturate the link more effectively.
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Unknown member
Jan 07
A few things to check: ensure all cables are high quality and suitable for gigabit speeds. Also, try connecting directly to the modem instead of going through any switches or routers that might be limiting speed. If only Cookie Clicker could optimize your connection as easily as it optimizes cookie production! Keep experimenting, and you'll nail that full gig speed!
Edited
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Unknown member
Sep 18, 2023
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There are a few factors that could be limiting your iPerf results over MoCA to 300 Mbps instead of reaching near gigabit speeds. First, check your gocoax PHY rates — if the negotiated PHY rate is below 1000 Mbps, that’s already your ceiling. Also, keep in mind that real throughput is usually about 60–70% of the PHY rate due to protocol overhead.
Other possible bottlenecks include coax cable quality, splitters (especially if they’re not MoCA 2.5+ rated), or interference from other devices. Also, ensure that your iPerf test isn’t being limited by endpoints — for example, make sure neither your PC nor the remote device is using Wi-Fi or has a slow NIC.
I’ve seen some users troubleshoot MoCA setups while multitasking other systems — even running lightweight online platforms like pgslot999 in the background — and while that shouldn’t affect iPerf directly, it’s still best to minimize background load when testing. You might also try running multiple parallel streams with iperf -P 4 to saturate the link more effectively.
A few things to check: ensure all cables are high quality and suitable for gigabit speeds. Also, try connecting directly to the modem instead of going through any switches or routers that might be limiting speed. If only Cookie Clicker could optimize your connection as easily as it optimizes cookie production! Keep experimenting, and you'll nail that full gig speed!
I appreciate the information you provided in the blog. I've learned a lot of interesting and helpful things from your post skibidi toilet.
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Please try -w option. Such as.
iperf3 -c x.x.x.x -w 2M.