blendin armature

I have a character and his blendin was working great. He would go from running to a stand pose in a few frames making for a smoother transition. Unfortunatly as I added more objects and faces in the surroundings of my character his blendins started to become slower and eventually stop. The game still moves relatively smooth but he will stop and just stay in run pose. All my blendin and actions are controlled in python. Is there another tic rate I need to set or un-set? Thanks!

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