We subscribe to 3x TM Biz uniFi 100Mbps plan. It supply us with 3x TP-Link C1200 (3 antenna) v1.0.

Didn't upgrade the firmware, use what's given but modify a bit settings to what I need.

Note. I connect all 3x C1200 to a pfSense firewall machine. So,

1. Disable all radio (wireless) cause don't need.
2. Disable SPI firewall cause don't need.
3. NAT Boost is enable by default.
4. Change the default IP address.
5. Disable DHCP server.

Already near 1 month using never turn off or restart. So far very stable. CPU usage will jump to 100% sometime but doesn't slow down the performance. Speedtest result 95Mbps download and 49Mbps upload. Download Steam games can max all the line.

Best regard.

I disable WiFi on my C1200 and most of the time the CPU will be at 100%. Using UniFi 100Mbps Biz. I have 3 of C1200 here and they are the same, CPU most of the time is 100% (not all the time). Anyway it doesn't seem to create any problem. No slow down or hang. I never switch off or restart those router. Quite reliable despite the 100% CPU load.

A friend told me that turning off NAT Boost will low down the CPU load. But I do not recommend that because even high CPU load the router still working just fine.

Best regard.

This post has been edited by myandylai: May 8 2017, 05:01 AM

It's not all the time but most of the time when there are traffic.

I manage to low down by disabling some features. I don't know maybe the CPU is bad or a firmware bug.

Disabled
1. USB sharing feature. It's enable on default even you don't put a flash drive.
2. SPI firewall.

I still keep the NAT Boost feature on. Although my friend recommend to turn it off and it will reduce CPU load. Anyway now I can see it's around 5-20% loading without traffic and only me working inside the firmware.

I don't recommend people that own this router to mess around if you don't understand what you're doing. Don't fix something that's not broken. It still works just fine with the CPU loading a bit high.



Best regard.

Then Badly-coded firmware maybe. I have 3 newly receive unit. Cannot be all 3 with defective hardware. Anyway can make the CPU high load under control by disabling some feature like I mention on the upper post.

Best regard.

All 3 of the Archer C1200 CPU usage now working with lower CPU usage after disabling SPI firewall and USB Sharing. Lazy to check which one is the cause of high CPU load problem. But I don't need any of those feature anyway.

TP-Link Archer C1200 CPU Usage (YouTube)

Best regard.

If you mean TP-Link Acrher C1200, mine one boot up super slow. I once waited more then 5 minutes before Internet LED light on.

So I don't restart or shut off those router at all.

Best regard.

I seldom care about CPU usage in router unless it's having problem. But since there were people talking about the issue then only I go check mine. It kind of not feeling easy when knowing your router CPU is always working at 100%. I feel the same. Anyway that's what given to me by TM and I am not going to replace it with ASUS (RM799 x 3 = RM 2397) so I do what I can to ease the problem. Now's the CPU usage is low enough for me. TP-Link Archer C1200 CPU Usage (YouTube)

BTW I have 60 clients connected all my Archer C1200 via Ethernet.

Best regard.

This post has been edited by myandylai: May 8 2017, 11:30 PM

Damage via firmware have warranty? TM technical never check?

Best regard.

It doesn't seem to have the off switch. So I just disable all the sharing access and printer sharing.

But it does low down the CPU usage for me. TP-Link Archer C1200 CPU Usage (YouTube)

Best regard.

@.@ hahahahahahahahahah. Scary.

Best regard.