when ever i summon the witherstorm now it makes my game lag so much i cant even do /kill. this happened after 3 days of playing with the mod. ive disabled mods to see if they were the issue and they weren't. im using the 1.18.2 witherstorm mod in 1.18.2.

Is it right when you summon it? or is it like 30 seconds after. And are you using shaders as well?

When the Wither Storm is summoned it locates the bowels arena it'll use which lags the game temporarily. It does crash some players games and I am tracking the issue here: #23

I think this always happens, because this also happens to me and I think the creator said that at the beginning, when the Wither Storm is summoned, the game is delayed for a moment, since they have to load the phases, the dimension, among others things, but in the end the game will be fine for you.