Can confirm, unless you have a short path that can do ~1 kg/hour of flow, about 3Kg in the boiling flask (10L flask) you start to see very bad isomerization of your D9 to D8, D10, D10A…
Short path is great if you are doing small (< 1kg runs) and you know what you are doing to keep temps low and total run times short.
Wiped film is for larger scale, but to get a comparable product takes multiple passes, and I believe it also leaves behind a distinct taste to the oil. I think SPD due to the entire volume of material staying at temp for longer, removes this “card board” or “burnt” taste better.
If you ask me both are not good methods for cannabinoid production. Once people perfect product of crystal cannabinoids at scale, I see distillation going away.
Heating natural products is just never a good idea.