New Notification delay

[ibrido8]

Using wifi or 3G Whatsapp (every version) and some other social apps (facebook messenger etc...) give a notification delay of 10/15 min..... it doesn't happen every time....I really don't understand why...
I use Xiaomi mi2s with the last miui android rom.....but it happened also with older releses.
My wifi is always on, even in stand by.
I try to use PNF app but it doesn't change.

 

[MLeonida]

I have the same problem and I also use the latest miui version

 

[ibrido8]

 

[Nico77]

same here...

 

[ibrido8]

It is very annoying....

 

[ibrido8]

nobody can help?

 

[ingbrzy]

allow popup window for that app and mark it as trusted app..

 

[ibrido8]

already done but it doesn't change anything...