Just as you didn’t call anyone here “stupid” I didn’t call you a (non)programmer either.
I have heard changes in sound quality between releases but admittedly only once and would not be surprised if there was something in what people are saying about Cubase 8 and figure it will improve with updates to resolve any ASIO/WASAPI issues.
Plugins may have been the cause no doubt but at that time I didn’t use any however this is not to rule out some internal processing in say a sample player such as Kontakt.