I'd like to ask: do the RN4 Qualcomm sold in India and the RN4X sold in China have the same ROM and/or the same codename?
Basically they're the same phone, they differ only for some network support (and if you think about Mi3 and Mi4 which share the ROM..).
Flashed on my Xiaomi Mi 5 without wipes.
No problems, thank you!
Anyway third parts themes won't work and can't get root permissions work good after flashing last SuperSU beta.
Plus, security patches are from August, but I guess newers causes problems :)
I'm hoping on Ivan's AOSP, but I'm not sure he'll work on it. Last year AOSP Lollipop came on November.
The other hope is that M1cha have not many problems (or not at all) to work quickly on the EFIDroid stuff, so he can start to focus on CM13. But there's to wait a little to firsts CM, and also...
I have this problem too, but it's also releated to the network you're connected.
In fact, with three different network of three different houses only one of them gives me the problem like yours.
Just to say that should be a not only ROM releated problem, but don't know what could be the reason.