Overheating, Bad signal ( 3G,4G), signal drops frecuently SM-G928G 6.0.1

Hi, i have a Galaxy s6 edge + with android 6.0.1, i was on stock rom for CHILE ( i download from sammobile) and now im in AUDAX PLUS M V5.0, my problem is the cellphone signal and 3G,4G connections, my phone gets really hot when i put mobile data "on", its never conect to 4G, only 3G and H+, and connect for 10-15 minutes, and after that signal drop again,

the imei is clean

i have to flash radio.img again? ( i flash diferent stock roms 5.1.1 and 6.0.1 and always the same)

i dont know what to do.....



PHONE INFO:
bootloader : G928GUBS2BPE2
PDA: G928FXXS2BPE2
CSC : G928FXXU2BPB6
BASE BAND : G928GUBU2BPC1

LAST FIRMWARE : G928FXXS2BPE2/G928FOXABPB3/G928FXXU2BPB6
ROM : AUDAX PLUS M V5.0
KERNEL : AUDAXPLUS_M_KERNEL_V1.3


sorry my english.

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