Archer C7 V2 low throughput

[hansallis]

First off I'd like to say I'm grateful for this type of project. The features are just what I was looking for.

After trying both 1.8.1 and 1.9.0 I found that the throughput I'm achieving both over wired and wireless connections is very low. We have a 30/30 Mbps connection which in practice achieves 29/25 Mbps when we hook up a laptop instead of the router. When using the router, we don't get anything above 12/5 Mbps.

I'm a bit stuck here since I can't grasp what's causing the issues. This is a list of what I've found/tried:
- for testing with the laptop I utilized the same cable as the router, so I'm assuming the cable is not to blame;
- CPU usage on the router is below 20% during a speed test;
- QoS is disabled;
- no other special settings, just a single UDP port forward;
- didn't test with the stock firmware (yet).

Any suggestions as to what I could try next? Is a hardware problem a likely cause for this? I'm a bit low on things to try from here.

[tapper]

Hi mate that does not seem right at all! Can you pleas try this testing build to see if it helps? It's best to not save settings wen flashing this build.
viewtopic.php?f=14&t=8247
This test build has all the latest fixes.
I will be most interested in your findings as i just brought me a c7 will get it on Friday.

[hansallis]

Thanks. I'll give it a try tomorrow and let you know.

[hansallis]

Ok, that actually improved the speed a bit to around 16/12 Mbps. Still not great, but a definite improvement. Looking forward to hearing about your experiences with the C7.

[tapper]

Just had a email saying that i will not get mine til Saturday so i will have a play around and get back to you then.

[hansallis]

Just did some tests during iperf which I couldn't really explain. As it turns out, the router negotiated a gigabit link over the cable to the CPE, while the laptop we tested with decided that 100Mbit/sec was better.

Apparently the cable we used works fine on 100Mbit/sec but causes a bad connection at gigabit speeds.

Case closed I guess Still looking for the proper way to fix the interface at 100Mbit/sec, but I'll probably manage.

[tapper]

Hi i just got my c7 today witch was a nice surprise. after running some tests i can say for shor that i am getting full speed from my wan. 70 up and 5 down. So looks like we both are happy campers! lol glad you got it sorted.