What is your connection speed?Ordered c6 - got us version(will mostly get us version) .. It does have snapshot version of openwrt. That's crappy and would give bad speeds on both 5ghz and 2.4ghz and even on lan connection. If you are going with stock version of the software,its pretty goodgetting approx 200+ mbps on 5ghz constantly.
Now that's an intresting question..What is your connection speed?
This is common bugs, manay are reporting this.... Anyhow these slaes are just a gimmick, better off buying offline....
D-Link DIR-825 AC1200 Wi-Fi Gigabit 1200 Mbps Router - D-Link : Flipkart.com Rs. 1899 now. Damn.