It started a while back. I think it happened when I updated to Yosemite, it happened when I updated to El Capitan. Wifi works fine for less than half an hour, then it stops working. It doesn't get disconnected, it just stops working. When I turn wifi on and off it starts working again, for a while.
Not sure if it helps but when I renew DHCP it starts working again (having trouble with the ip?). I'm sure it's not hardware-related because it works fine when I'm using other networks It's only with my home network that I have this problem. I don't anything is wrong with my network either because all my other devices (PC/cell phone/tablet) work fine. I've tried all the suggestions, last one I remember is reseting my PRAM. I don't know what to do anymore.