Hello!
I have a Nexus 7 LTE 2013 tablet (deb), which had Nethunter 1.0 with kitkat installed on it working fine. After some time of not using the tablet, I decided to flash the latest and greatest of Nethunter - which now is 3.0 and according to the github page support CM 13 6.0.1! (the page lists the non LTE version (flo) - but it worked before on deb so why would support be dropped).
So I followed the necessary steps (twice):
1. Install the latest release version of CM 13 (20160418 in my case).
2. Install pico gApps (for ARM).
3. Boot and configure minimally
[Backup nicely working installation]
4. Flash Nethunter (nethunter-flo-marshmallow-3.0.zip)
After booting from step 4 - the installed boot screen is laggish. Then it comes slowly to the home screen - which is just black with 3 buttons on the bottom (return, home, menu). I can hold the power button and after some lag the power menu shows up. Same lag applies to clicking any of the 3 buttons. In short it is laggish as anything (I had a similar issue with lollipop in Nethunter 1.1).
Before attempting step 4, I also enabled developer options (on my second run) and root for apps and ADB - all to no avail.
Any help would be appreciated,
~confuded