sfsmallscreen - option to disable slide up/down animation?

Hi there. I'm not sure if this is the right place to ask about this (the GitHub page doesn't seem to have issues enabled). The small screen accordion is great, but the slide up/down animations on sub-menus cause the whole page to be redrawn, since the height of the menu changes and pulls or pushes all the other elements after it in the flow. Even on fairly recent Android devices, Chrome is slightly choppy on simple pages during the animation. It would be really handy if there was a way to disable the animation and have sub-menus open and close instantly, like the toggle opens and closes the main menu. I'd be happy to hack together a patch if someone with better knowledge of the code doesn't have the time.