I’ve tried out CoreELEC for the first time a couple of days ago on my S905W device and I really like it. The only problem is that entering a BD menu, I get a dark screen and if I don’t make a quick selection, the system will freeze. This problem is not present on LibreELEC Krypton or LibreELEC on my RK3328 device.
Here are two images to describe what I mean:
This is what it’s like on CoreELEC: https://i.imgur.com/eAR62oT.jpg
This is what it’s like on LibreELEC Krypton: https://i.imgur.com/2Ngus2e.jpg
Also, for some reason BD Menu is not using HW acceleration so scrolling through it is very slow.