The effect will be even more amazing for non-nexus/carrier devices with bloatware - my work phone (VZW M8) just got Marshmallow and it took couple hours to comp

The effect will be even more amazing for non-nexus/carrier devices with bloatware - my work phone (VZW M8) just got Marshmallow and it took couple hours to complete - most of the time was spent on twice optimizing 303 apps! (Only 30-35 out of those are things I installed.)