My AC3200 is slower then my AC87

[Zulan]

Hello, I have a AC3200 and a AC87U. Both have Merlin 380.57 firmware. Both connected to the same fiber connection. Only difference is it's external IP. This way I can switch fairly fast between the two and run performance tests. During a period of maybe 3 minutes I ran 3 tests each and there is clearly a difference. The AC3200 is slower, and it's so much that I even noticed it. Is this really possible or is there something wrong with my equipment? I have done a factory reset on the 3200 but not on the AC87. I dont want to do it, since then it might become as slow as the AC3200

AC3200 AC3200
Down Up
370 710
457 746
468 709
420 750

AC87 AC87
Down UP
684 962
656 963
648 962

 

[Zulan]

I tried installing the original firmware 3.0.0.4.378_9459 on the AC3200 but that didnt help. Same bad figures compared to the AC87

 

[hggomes]

They should perform very similar under the same circunstances, they are identical HW wise, are you testing RT-AC87U on LAN1 (Realtek Switch) or LAN2,3 or 4 (Broadcom Switch)?

 

[Zulan]

I had the AC87U on lan1. I moved the cable to lan3 but it's just as fast there. No difference at all actually.

 

[hggomes]

Is QoS enabled? Make sure you use the same config on both routers.

 

[Zulan]

Ok, so just to rule out any changes I did a factory reset on the AC87U as well. This means that they both have the exakt same settings, meaning none. Now the difference is even bigger.

AC3200
down up
544 714
535 835
544 782

AC87 after reset
down up
792 962
854 962
858 961

 

[Matthew Patrick]

Maybe disable smart connect. And use only 5ghz band

 

[hggomes]

The tests were made via cable not wireless, so smart connect doesnt change anything at all in here.

 

[Zulan]

I have tried disabling smart connect. It's not on as default and the router was reset. I've been using cables and not wireless.

I'm thinking I just have to accept that the AC3200 is slow and use it as an accesspoint instead of a router since if I put the router in AP mode and put a cable in it, I get good speeds. It wasnt exactly what I had in mind though.

 

[hggomes]

Thats really weird, have you tested different FW versions? Same results?

You could give a try at Tomato FW and check the speeds over ASUSWRT, it should be an interesting compare.

 

[Zulan]

Yes, I have tried merlins latest and asus latest. I have also tried 2 versions older of the original asus firmware with no difference.