Yes! I had this happen once. I kept adjusting open speed higher and higher and it wouldn't change. Then I changed a different parameter and I thought the freakin door was gonna come through the shaft wall it opened so fast. It might very been a torque limit or something. There's was a different parameter that's limiting you. Keep searching, pull up the help file and look through every adjustment for the doors and try changing stuff one at a time. I wish I could remember exactly which one it was