Does the ovation ROM work smoothly with no lag? Currently using the latest lineage 14.1 build (DEC 2018), and have frequent slowdowns and huge blue lines flash across the whole screen for a second when rotating the screen, switching to another app or swiping down the notification panel. And also when trying to play a 1080p video on the YouTube app, I get a black screen and just audio plays. Every other resolution works fine. This is a very beautiful 1080p display going to waste if it can't run 1080p video. I do note that on the 2017 build of lineage 14.1, I never got this issue. I do hope this is just a internet issue and note a tablet issue. Only when I clean flashed lineage 14.1 from December of 2018 in get this problem. I hope that 1080p YouTube works on aosp UA 8.1 Oreo. I do apologize for my rant.
Try out my CM 11 ROM. I’ll be releasing a new CM 11 build tomorrow or on Saturday. https://xdaforums.com/nook-hd/general/rom-lineageos-11-t3668779