I mean some crashes are fine. But what i'm worried about is that it will become very frequent. Just today i've had 3 Disconnects in a kind of short time span. And when the que is 3.600 players to get back in i feel it could get annoying very quickly. Espacially if you are in the middle of a dungeon or raid. Imagine trying to do a Savage or Ultimate fight and you all get these DC's with huge que times. It could make it so that it's just not possible to clear the content. Same with if there is lag. Lag on harder fights could make it so that players makes a misstake and will die, causing a wipe. So it does need to be adressed by Square enix atleast before Endwalker where the servers is going to be even more crowded.