Maybe I'm not the right person to say this but seeing so much complains about freezing I feel that I need to say something.
This ROM is still on beta, that means it's not a stable daily driver and if you choose to flash it you will accept the flaw...
I'm using 6.0.1 very happy, one of the issue is the camera problem that with recording videos at 1080p had not the highest frame rate... sad... the videos aren't fluent... when the camera issues on this mod will be solved, sure I'll test it! Thank...
My poor S4 just kicked the bucket today with Opt. CM13.... lol
So it's time to go further and resurrect it with Opt.CM14.
Problem with sim here, any suggestion ? After a reboot the phone can't find the sim showing "no sim card" in quick settings
As side said in his Opt. CM13 thread did you update via ODIN to the newest Bootloader+Modem (XXUHPG1) from _Bon_Bon's th...
Most likely you will need to reflash.. that's why devs says that you have to do a nandroid backup just in case... Maybe try safemode?(Vol Down after the logo appears)