Similar code running bogs down in Vehicle Lua but not in GameEngine Lua

So I'm making a mod and am converting the current GameEngine Lua code into Vehicle Lua code because I want the Lua code to be executed when I add a part to the vehicle part's list. After converting the code, I profiled both codes using the "LuaProfiler" module and they both executed under 1ms. But for some reason, the similiar code I wrote completely bogs the game down running in Vehicle Lua (around 10 FPS), but running it in GameEngine Lua barely makes any impact (around 60 FPS). Does anybody know why this is the case?