I followed the directions in this link:I'm using this rom for few months with Android auto, and never had problems with GPS accuracy. Maybe this is region specific issue.
http://evilmax.ru/xiaomi-mi4c-gps-problem-fix/
found in en.miui thread:
http://en.miui.com/forum.php?mod=viewthread&tid=554028&page=1&extra=#pid12430941
and now is much better as i mentioned there. It was hardware problem. Somehow loose the connection with antenna ...
Thank you for your interest and support!
