I dont know why people goes with nihgtlies.. Those a are for beta testers..
Ill explain some.. Franco wants to add a new feature.. So he code it and compile the new nightly but then as a result when testers flash the nightly the new feature its causing some problems with other stuff like making wifi drops..
So the testers report and then franco try to fix and so on.. Until he releases a MILESTONE (bugless version of the kernel)
I really encourage you to only use milestone roms/kernels unless you wanna be a beta tester / bug reporter for devs... Wich in that case you shouldn't be reporting your wifi issue here but to franco
Galaxy Nexus AOKP m5 Franco kernel m3