LTE on my 910H

[CodeNameRedNeck]

First of all let me apologize to all those who I did not believe when they said they got LTE on their H version of the Note 4.
What I did was download the C version for Croatia (tele2) from www.sammobile.com.
I then removed the modem, hidden, and, sboot.bin from the firmware and re-packaged it using TAR_MD5_PACKAGER.
In recovery I factory reset the device, powered off and installed my packaged MD5 of Croatia (tele2) using Odin.
Then I flashed a C version modem even though it failed.
The problem is after a while I loose LTE. It will switch from LTE to 3G then to HSPA+.
I have changed my build prop to mimic an AT&T phone as well as the CSC others.xml file to mimic an AT&T phone and used AT&T's NxtGen APN but eventually I will lose LTE.
I can go into settings then More networks then Mobile networks then chose Network mode and switch from LTE/WCDMA/GSM to WCDMA/GSM and then back to LTE/WCDMA/GSM to get LTE working again but eventually I lose LTE and am back to H+.
I have done speed tests and I do get comparable speeds that I normally get on my AT&T LTE devices so I am sure that I am really getting LTE. Has anyone figured out a way to keep LTE without having to restart or go through the settings to get it back?
By the way I am not sure that it matters what firmware of the C version you use as long as you factory reset.


Edit: Added another screenshot, it seems that it only kicks me off of LTE when the signal is too weak and the phone has switched back to LTE at times on it's own.

 

[DarkGuyver]

Sounds like you need to either reinstall the original stock firmware for your Note 4 or install another custom ROM for it. As it seems the LTE drivers for the ROM that you are currently using aren't working very well.

Or your Note 4 may have developed a fault and needs to be repaired/replaced.

Also since you have a N910H, which is a 3G model of the Note 4 you should not have LTE/4G capabilities.