We have not come across any user's complaint about it so far. Since the model is new, you can expect that such issues reported by users only after a certain usage or time.
No. Micromax Bharat 5 does not have the NFC support.
No. Micromax Bharat 5 does not have the fingerprint scanner.
Micromax Bharat 5 pro has ARM Mali T720 MP1 GPU which is a single core GPU and its frequency is 600 MHz.
Yes, Micromax Bharat 5 pro does have the google assistant.