Microsoft today released a new Xbox Preview build with performance fixes when navigating Home. Few days back, Microsoft released a preview build with some significant fixes and improvements to Cortana, which now features improved speech recognition in a number of regions, fixes for Groove crashes, Narrator crashes, more informative Messaging errors and more.
Full change log of this preview build below.
OS version released: rs1_xbox_rel_1610.161105-1400 Available: 6:00PM PDT 11/6 (2:00AM GMT 7/11)
Performance fixes when navigating Home.
Once the update is available, you can update by launching the Guide and navigating to All Settings > System > Console info & updates.