mic is not working in apps and games please fix it soon
check this bro
1) Download official 5.1.5 rom from OnePlus website .
2) If u can't find 5.1.5 as it is still rolling out download 5.1.4 rom as it is also a complete...
you are a beta tester bro. you are not using stable version you can revert back by downloading 5.1.5 update package as it is a full rom you can flash...
Guys Project Treble officially supports with this particular update that's why the size is too big. you can check it using treble check application...
they didn't mentioned about project treble but this update contains project treble check using treble check application
there is an option called quick search which does the same job
Nice and new features are availability of different ambient display styles (both 5 and 5t)
and navigation gestures(5t only)