I can't say I'm an expert on spraying, but have had quite a bit of experience with it myself, and have worked closely with professionals (painting aircraft).
From all I've learnt, what you're looking for just doesn't exist, sorry.
IME, ANY spraying job with any sort of gun consists of (approx.) 45% of total job time spent on prep (the job, the paint, and the gun,) followed by 10% total time actually spraying, followed by 45% total time cleaning afterwards (inc. the gun & container/s plus the job and surroundings). My experience also proves to me that there aren't many short cuts in the above, whatever materials you're spraying (not even water-based varnish).
Yup, as Peter Millard's excellent video series on spraying shows, (+1 to the above comment about his vids, good info on spraying) there ARE "tricks of the trade" you can use to reduce the above prep and clean up times, but sorry, you're still going to have do both prep & clean up tasks - dirty, boring, and (in relation to the actual spraying time) time-consuming.
Which is why I do not now spray unless it's a big job. All my small size jobs are attacked with rattle cans - which are relatively MUCH more expensive, and also require both job and can prep, but also result in a MUCH faster job overall, and with practically identical (good) results.
Please note, I'm not referring in the above to house-painting sized jobs, I'm talking jobs of up to, say, a couple or 3 Sq Metres.
Just MO and ME. HTH