Wi-Fi issue since upgrading to marshmallow

I use my lg g3 as my wireless hotspot and since updating my nexus 7 2013 Wi-Fi edition to marshmallow it will connect but not have internet access any other devices I connect have internet. If I reboot both devices and connect I'll get internet for a few minutes but then I lose it again. I've tried a factory days reset and a few other things
Any ideas would be greatly appreciated
Thanks Rob