I have a very low Wi-Fi speeds on my ASUS RT-AC57U. Less than 30 mbit/s at 5GHz is ridiculous:
This is not signal issue, no matter I connecting from distance or putting phone directly on the router. Link state is excellent.
And 2.4GHz performs even worse:
I've tried to change avaliable settings, channels, operating modes, etc. Only managed to make it worse.
So, anyone knows what else I can try to do?
P.S. Stock asus firmware doesn't have this issue and easily operates 200+ mbit/s at 5GHz. And also obviously this is not connection/ISP or router CPU overload issue. Connection via ethernet port works great: