toby23 knows what he is talking about. As someone who knew Phil Taylor many years ago when he switched from oceanography to computer graphics in college and who (Phil) ended up as a major contributor in writing the book on DirectX, I can say without question toby23 has this subject nailed.
Someone else who I knew back in the days of Steve Lacey on campus who was one of our top advisors from outside revealed all this superficially in something he called a bible on another website but unfortunately most can not comprehend the depth of that topic without specifics.
I can say without reservation to not discount a single word toby23 says and follow his direction without question. What toby23 is about to reveal is also valid for environment graphics such as cloud tiles, water, runways, and so on.
There are very few interviews and disclosures in the FS world that qualify as a 'God talked to Moses" situation.. this is probably one of about 3 since Steve Lacey and Aces was disbanded https://www.youtube.com/watch?v=LOMVlr7x0-s
When toby23 posts this information, anyone who reads, comprehends and follows it will become enlightened beyond their wildest dreams regardless of what version of ESP they use.
It will place into perspective just how much the public has been taken by developers for some time and how much hair they have lost trying to overcome the problems created by these so called expert developers.
good luck, and may the VAS and smooth frames be with you, always