FPS drop when handlgin Bales

[Gnrnr]

I picked up the game yesterday and am now working on a silage bale contract. I messed up and am having to individually wrap the bales using a bale wrapper and am using a tractor with a front end loader with a bale handler attachment on the front. When playing normally I am at a steady 60 fps. When i pick up a bale and the physics for that kicks in the frames instantly drop to between 8-12 fps. as soon as I drop the bale into the baling machine, immediately i am back to 60 FPS.