4K Discs glitching three quarters way through.

[eChopper]

try a pc fan on top of the player. helped my oppo avoid freezing for many years

[Necril]

Originally Posted by eChopper

try a pc fan on top of the player. helped my oppo avoid freezing for many years

Somewhat same solution here. Improving ventilation completely fixed problems with 100GB discs for me. For Sony players, I think the most effective way is to place the fan behind the player near middle, where the ventilation grid is located at the bottom of the player.