Looking for a good, solid custom ROM with Android 5.1.1 with everything working out of the box including Netflix? Check out the latest Dirty Unicorns ROM.
Based on latest Android 5.1.1, the Dirty Unicorns ROM comes rooted out of the box with SuperSU and lots of customization over CM12.1 ROM.
What I really like about Dirty Unicorns ROM is near flawless experience. Many other CM12.1 ROMs have bugs and Netflix replay not working but I found the Dirty Unicorns ROM the most stable with pretty much everything working out of the box.
As far as performance and battery life, you can also expect the best performance out of your Note 2 along with excellent battery life. Overall, this is a great ROM to get started if you want the best performance out of your Note 2 on Android 5.1.1 so definitely give it a try this week(end) and do let me know what you think!