Update 1:
Router is definitely more responsive. I tested it during gaming, and it seems better for sure. I still get a few latency spikes, but it's not as bad.
Lots of LAN errors, and wireless errors - ONLY after a few hours.
There is still some problems with using WPA/WPA2, and TKIP and AES while using N/G and G only in 2.4 GHz. This is a problem since there are still people who use legacy devices.
I had an error when setting up GameFuel rules, where I needed to edit one after saving (and not rebooting), and it brought me to a blank page, and then kicked me out of the GUI.
No lock ups yet - but then again, I never experienced one. Only a slow down, and that was it.