Hello I have this problem where my car will shift amazing until driving a little bit and when I come to a stop it’s as though the car will start in 3rd gear and then move slow then jam down into first and as of yesterday it will stay in high gear and will jam down will just move super slow… I also put it into slap shift mode and it’s blank, anyone have any ideas what it could be? The car shifts super smooth when cooler and I also added a transmission cooler but that hasn’t seemed to help