This is reposted Vibe 3.69 Custom ROM, for those, who don't want any lags, fast battery drain and other calling and network issue in their mobile. This is fantastic and higher gaming, battery, calling and network, performance and speed ROM in entire custom ROM universe.
Note – This is clean and stable version with android 6.0
Faster UI for NFS No Limit
Experience the Maxx Audio + Dolby Digital Sound
Rating - 10 out of 10
Performance & Speed = 10/10
Calling and Voice = 10/10
Internet and wifi network = 10/10
Apps management = 10/10
Battery Charging and Backup = 10/10
Features
Miravision (best dynamic contrast and visual experience)
Switcher for smooth multitasking
Framework
Dt2w and dt2s
Dolby + Maxx Audio
Dolby has been leveled up so that you get the best audio experience along with max audio as well
Sony music has been replaced with Lenovo Music (the feature has “shake the phone to change the music track)
Super camera (Lenovo camera 5.8) along with open camera (you can remove the one which you don’t like using system app uninstaller, one of the best feature of Vibesavon under additional settings)
Fast reboot
Bloatware removed
faster Battery and Faster Gaming
Gio Support but No VOLTE 
Fast and Clean Install (Flash) Instructions, can be found here – Flash Guide
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Thanks and Regards
Original Source – XDA Developer, Credit, and Thanks - Sandeep