Hi so I have used Rimatomics for ages but I keep getting this error message and lagging. I havent added anything new so I dont know what is clashing with this mod. I am not great with modding so this may be a stupid question but can anyone tell whats wrong with my mods?

The error message is:

filteredStrength 3.75
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
Rimatomics.DubUtils:applyRads (Verse.Pawn,single)
Rimatomics.DubUtils:emitRadiation (Verse.IntVec3,single,single,Verse.Map)
Rimatomics.Item_RadioactiveThing:Tick ()
Verse.TickList:Tick ()
(wrapper dynamic-method) Verse.TickManager:Verse.TickManager.DoSingleTick_Patch2 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
Verse.Game:UpdatePlay ()
Verse.Root_Play:Update ()