I upgraded to the latest version/build (8.9.0.135308815) today and got massive stuttering in my different devices a Nexus 5X and a Motorola Moto G 2015 (on Nougat and Marshmallow respectively), tried clearing cache and data to no avail... reverting back to a previous version fixes it so it's clearly the latest build. It really looks like they ported the code to show content the same way the "Play Store" does using a poorly optimized web client, the judder and lag are unacceptable. Maybe they're rushing things for the Pixel phones. Anyone else?