R6700V3 Downstream QOS speed issue

[timsalu]

Hi Guys, I just purchased this router and I'm having some speed issues when QOS downstream is enabled, currently running latest FW. 

My ISP speed is 50 MB, when QOS enabled, I get 1mbps in average from speedtest.net, is this normal? I\m getting it on both bands, 2.4 abd ghz.

Any ideas? Should I avoid using this feature?

Thanks.

[timsalu · Accepted solution]

What I changed was the cable from cable modem to router to cat 6 cable and it worked. perhaps my old cable was defective.

[JamesGL]

Hi timsalu,

What priority did you set on your device under QoS?

How many devices are affected?

[timsalu]

Is working fine now, all stable and working as expected. Thanks.

[JamesGL]

Hi timsalu,

Please share the things you have done that made it work.

[timsalu · Accepted solution]

What I changed was the cable from cable modem to router to cat 6 cable and it worked. perhaps my old cable was defective.

[JamesGL]

Hi timsalu,

Thank you for sharing. I will tag your response as accepted solution.