Simple fix for anyone still having GPS problems ;
Boot into your stock side,
use a root file explorer to copy System > etc > gps.config to a new folder on your external sd card.
Reboot back into slot 1,
Copy and paste that file from the sd card to /system
It will overwrite the existing file.
Reboot
Instant location lock-on in Maps and Navigation
;-)
Via Tapatalk
an app called faster GPS fixed my GPS.conf file. just select the correct continent and region, the values are applied to the GPS.conf file and worked like a charm