I have an RT-AC68U running Merlin firmware version 386.1_2. I recently upgraded to an ISP plan with 400 mbps. I got the full speed when my PC was wired to the modem but not through the router. I tried changing various settings, but eventually resorted to resetting the router to factory defaults, which resolved the issue and gave me > 400 mbps through the router.
I then added back my various router configuration settings that I had before and when I enabled QoS for the bandwidth limiter feature so I could limit some specific devices (but not my PC), I noticed that the speed on my desktop dropped back down to 200+ mbps (I was limiting several devices to 10 mbps, not 200). Disabling QoS again did not bring back the full speed, even though I tested my speed before enabling each feature and enabling QoS caused this drop. I then restored back to factory settings and left QoS off but re-enabled my other configuration settings and retained full speed > 400 mbps. I made a backup of this configuration.
I ran this way for a couple of weeks.
I recently changed my guest networks (2.4 and 5 GHz) so that they would have have the bandwidth limiter feature turned on. Again, my PC is hardwired -- not using the guest networks. I noticed today that my PC speedtest came back around 200 mbps again. Disabling this feature in the guest network configuration did not bring back full speed to my PC. I restored the router to the firmware backup I made and again full speed was restored on my PC.
Is there some reason why enabling QoS bandwidth limiter (but not including my PC in the list of limited devices) *or* enabling the bandwidth limiter for the wireless guest networks would affect the internet throughput to my hardwired PC? And why disabling it doesn't resolve the issue, and a full restore or reset is required to truly undo that setting?
Thanks!
I then added back my various router configuration settings that I had before and when I enabled QoS for the bandwidth limiter feature so I could limit some specific devices (but not my PC), I noticed that the speed on my desktop dropped back down to 200+ mbps (I was limiting several devices to 10 mbps, not 200). Disabling QoS again did not bring back the full speed, even though I tested my speed before enabling each feature and enabling QoS caused this drop. I then restored back to factory settings and left QoS off but re-enabled my other configuration settings and retained full speed > 400 mbps. I made a backup of this configuration.
I ran this way for a couple of weeks.
I recently changed my guest networks (2.4 and 5 GHz) so that they would have have the bandwidth limiter feature turned on. Again, my PC is hardwired -- not using the guest networks. I noticed today that my PC speedtest came back around 200 mbps again. Disabling this feature in the guest network configuration did not bring back full speed to my PC. I restored the router to the firmware backup I made and again full speed was restored on my PC.
Is there some reason why enabling QoS bandwidth limiter (but not including my PC in the list of limited devices) *or* enabling the bandwidth limiter for the wireless guest networks would affect the internet throughput to my hardwired PC? And why disabling it doesn't resolve the issue, and a full restore or reset is required to truly undo that setting?
Thanks!