Ok...if anyone is reading this.
I was able to resolve this issue based on forum discussion link
https://forum.game-guru.com/thread/218152. The issue seems to be related to the speed of the door opening. What seems to happen is your character gets "Hung up" with the sliding door. I originally thought the issue might be the door hight or character height values. (Not true)
SOLUTION: (Make a copy of the original Lua script first: doorautolegacy - Copy.lua change the original values in the original script + 0.1 and - 0.1 to something like 2.
Change: doorautolegacy[e] = doorautolegacy[e] + 2 and doorautolegacy[e] = doorautolegacy[e] - 2 in the "doordoorautolegacy.lua" script "Save" and everything is then fine. Doors open supper fast.
Hope this helps.
PC SPECS: Windows 10 Home 64-bit, Intel Core i7-2700K (PASSMARK:10401.1), NVIDIA Geforce GTX 570 GPU (PASSMARK:5079.4) , 16GB RAM