tModLoader Modded map crashing.

[Cyanide Jum]

So, after roughly 40 hours of gameplay, my map is REALLY laggy, i got infinite rain and i have to play with no music mods so my game stays open, (Yeah i got only 4GB of ram so thats normal in most games) but, my game never crashed in ANY time, but when i built a new base/town for me and my NPCs my game suddently crashed when i checked if the house was appropriate, my map is pretty large and i got many things to do on it before i move to the next run, so i want help to fix this problem sooner as possible, i will post the crash log and the mod list so you guys can see about it and try to help me.

Spoiler: Crash log.

Spoiler: Mod list

 

[zaverns]

It's the acid rain. You need to cancel the event with the abominationn I think from Fargo's mod. The acid rain even hits hard on my good rig, it's very poorly made.