Google had just rolled out the Android 5.0.1 patch update and Nexus users, especially the Nexus 6 and 5, should not hold back from applying the update. This is because of the fact that the Android 5.0.1 patches the many bugs and issues on the initial OS.
Of course, there is a trend going on where every update comes with its own sets of problems but at least the Android 5.0.1 does stabilize the Lollipop OS in every way. It simply does more good than harm. Even the benchmark tests have surfaced to show that the Android 5.0.1 firmware is extremely stable, smooth and fluid.
With a stable OS running the Nexus 6 and 5, obviously performance will also improve accordingly. The Android 5.0.1 update is confirmed to have enhanced battery life and offers better control on the processors.
In short, Google Nexus 5 and 6 users should not delay in applying the Android 5.0.1 Lollipop update. At the moment, the patch firmware is made available to only Nexus devices but soon, it will be arriving to the Google Play areas.