If you fancy a change and have some spare time/cash, have a look at the Fritz!Box 3490 (£40) on Ebay and has Lantiq chipset, you can set it up so gaming is via Fritz!Box (wired) and wifi can be via ASUS router which is double NAT-ed to Fritz!Box.
@Grisu and I really like these units and other units made by AVM, but wifi not as strong as ASUS, so may need to use ASUS for wifi only
Fritz!box 3490 is modem and router combo and looks like a flying saucer 
In a completely sane world, madness is the only freedom (J.G.Ballard).
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