I set up a wireless-N (2.4ghz) network and speakeasy.net/speedtest gives me good results (25mb/5mb -- with the wire its 50/5 which is what I'm paying for, but oh well)

My problem is when I'm in a game (I've tried quakeworld and starcraft 2 so far - windows 7 64-bit) I get sustained high ping and packetloss, to the point where it is jumping between 30-3000 ms ping, and 5-100% packetloss.

When I connect through the wire, I get stable 30ms/0pl.

I've narrowed the problem to the wireless router - it is a Linksys E2000 that I upgraded to the latest firmware 1.0.04.

I'm pretty sure it is the latest firmware that is causing this issue, so my backup plan is to just reset the router and use the 1.0.00 firmware which I'm almost certain worked fine the other day.

But before I do that, I wanted to ask you guys if you know how to fix such a problem.

My local wireless machines/gadgets can be unusable over simple things like a neighbor using a microwave, fluorescent lights, cordless phones nearby, you name it.

Not really ideal for low-latency gaming.

I'm pretty sure now this issue is caused by interference and saturation on the 2.4ghz band ( http://en.wikipedia.org/wiki/Electromagnetic_interference_at_2.4_GHz )

I switched to 5ghz and wow(!) it is like night and day. Exact same speeds as with an ethernet wire.

So now I have a new dilemma - I only have one 5ghz receiver and they are pretty expensive (50 bux a pop, I have the AE1000) so do I get more receivers, or do I go the ghetto route and set up a 2nd wifi router for the b/g band?