Sirius bossfight causes way too much lag on this PS4

You cannot react during parts of this fight as the screen is locked for several seconds constantly. It's always during the last phase when the 4 beams are rotating, it's always a screen crash that lasts from 1 to 5 seconds, meaning you can't move, you can't pop your pots, you can't do anything but die.

It's really really frustrating

Don't expect anything to be done about it. GGG don't care if their product works or not. It is the same thing every league.

The league content doesn't work as intended until 2 leagues later and even then it still doesn't work properly.