Welcome to our forum.
Royal does not use computer controls. The controls are mechanical.
When it comes to the "pink panther" insulation that is stuffed into "garbage bags", I can't say that your observation and subsequent opinion is wrong any more than I can say that Royal is "right" for constructing a hot tub with this style of insulation. Unless a study is performed probably nobody on this forum can say for sure which style of insulation is better.
Sorry I can't agree with you. I think Royal Spas are one of the cheapest made spas around. I didn't like one thing about them. The insulation was a JOKE! I mean who the heck takes a bunch of pink panther house insulation in garbage bags and stuffs it in the cabinet and calls it insulated! I couldn't belive it. I mean that alone was enough for me. The control by the filters what ever it was for was screwed in and the screws were rusting. The tubs just plain and simple look cheap! I am not one that bashes tubs but these are bad. Perhaps it was just this dealer (lets hope so). But after seeing that I wouldn't even consider a Royal Spa.