I also have a Note 8 with the latest Android 8.0.0 August security patch and Google Daydream.
Skybox is not working anymore.
The first time I launch skybox after installing it, it works fine for a few minutes until it starts stuttering like crazy.
If I try to launch it again it gets stuck at 50% loading.
By the way, the app is not available in Google play, I had to get it from several unofficial sources. Nothing works.