I'm kind of new. Recently bought an Asus RT-N12B1 and flashed shibby's latest build (I think 92). On wired, I'm getting 20-25 Mbps down, 4-4.25 Mbps up. On wireless, I'm getting an extremely slow 0.5 Mbps down, but upload is still fast at 4-4.25 Mbps.
I tried changing transmit power to 60, using different static DNSs, using different channels, and changing the channel width to 20Mhz. Nothing seems to be working.
WMM is enabled, and QoS disabled.