The objective of this simulation was to just have the cloth hang down so part of the tent door is open and part is hidden behind the tarp. Originally it was a simple plane, I have recently solidified it (0.01m) after reading some tips and answers from other questions on StackExchange but this did not solve it.
I will provide all the images showing my modifier stack, cloth physics settings, collision settings and the static pin group as well as the blend file below.
I have had to delete the bakes for the simulation due to file size for blend exchange.