30k+ ms when a lot of spells are being cast

I'm having a tremendous lag problem in raids, where my ping spikes my f3+3 (show ping command on f3) turns half of my screen red when a lot of spells are being cast, i can see what everyone is doing but i can't do nothing until all my party members die, i have normally ~140ms, i'm from brazil and it didn't happened before, i have 1gb internet connection and it doesn't happen in other servers (like skyblock for an expample) nor games, just happens in wynn and it's been unplayable for 1 and a half week, any suggestions on how to make it better?

I use some mods: Wynntils, wynncraft spell caster, lithium, sodium and bobby, always playing on NA servers for the best ping possible and i've never had this problem before