I sometimes use auctex + ess for Sweave/knitr documents.
Every time I switch from auctex to ess and vice versa, there is a pause/jolt while the auctex lines re-wrap themselves.
Previously, I also had outline/folding modes turned on which made it nearly unusable, but after turning those off I think I only have auctex's line wrapping feature keeping me from making a smooth transition between the two environments (in the same file/buffer).
How can I turn off this line-wrapping feature and keep it turned off? I assume it is associated with some hook; turning it off manually will not work because it will immediately re-initiate itself once I switch back from the ess to auctex environment.