have you restarted the router before testing the new rom ?
i made this "tablet" rom also because ehomemediacenter apk, that is inside other roms, make crazy my router. If you have used an old rom with ehomediacenter inside, you can have the same my problem.
The only way to have the router again working well is restarting it.
Many of you have used rom with ehomediacenter inside that i hate.
I suggest to restart router before try the new rom. And after you can test the wifi.
i downloaded xbmc 8 or 9 times without any problem. the wifi is very strong and stable.
And i use DroidMote for all my tests, and it need good wifi. All is perfect.
Yesterday my son looked for three whole hours cartoons from youtube and did not notice any problems on the wifi. (this is the best test otherwise my son crying, is like an alarm for the wifi

Attention also if you have in your lan another android hdmi stick with this apk inside. (ehomemediacenter apk) Some routers are not affected, but many others become unstable when they receive the bad broadcast packet from ehomemediacenter.
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