The Android Oreo 8.1 developer preview has been available for a few days on Google Pixel and Nexus phones and although it appears to be a simple standard update, it brings very significant performance improvements. Specifically, version 8.1 introduces internal changes that make scrolling and total user experience much smoother. This is confirmed by all those who have updated their device, who note that the performance improvement is certainly remarkable.
Those who have a Google device waiting for the upgrade should note that the Android 8.1 version is still in developer preview mode at the moment, so it is not completely finished, and we recommend that you wait for the stable version official arrive on their device.
That’s why Google still does not have official information about the changes. A Reddit user, called scoularis, claims that “Google has included an extra frame buffer on the Android rendering engine, and the end result is a perfectly synchronized scroll without deducing even an image from the view.” This is a good explanation, but we have not yet seen a detailed technical explanation of Google on how this is made possible.
The same user, scoularis, claims that the sensitivity suffers imperceptibly to achieve this super smooth performance, but the end result is so excellent that it seems worth it. Compared to the iOS, which responds with a slightly softer sensitivity, he says he prefers the smooth running of Android, from the slower roll of iOS.
SOURCE : REDDIT