SDE is worst on Rift S since the last firmware update. No flash anymore but these lines are way more distracting ! I've bought an Index and the same phenomenon appears on its panels too, but vertically.
Oculus Rift S - Oculus Quest - Gigabyte Z390 M Gaming - i7 8700 - 16GB Corsair
Vengeance LPX 3200 MHz - Aorus GTX 1080Ti - 2 To SSD - Corsair RM650X