I didn't know there was an 1809 which is just as well. I recently bought a computer with 1709 on it and immediately stopped the automatic updates. The computer performed beautifully. Silly me restarted the automatic updates and I've had nothing but problems. 1803 keeps trying to install without success. As though that's not bad enough, it causes the computer to run at a snails pace, programs to stop responding, and other updates such as drivers won't install because they are "waiting their turn". I even had a firmware install waiting. I finally got fed up and stopped the automatic updates again. The computer is back to its usual speedy self, programs are no longer not responding, and the other updates installed. Considering the problems of 1809, I now consider myself lucky 1803 didn't install.
Due to the language involved, I cannot in detail express my total frustration with Microsoft, not only with Windows 10 but also with Office 365. I don't get why this company insists on making its products worse with each new version. Sure, it always adds new bells and whistles, but what's the point if a function that use to be simple is complicated beyond recognition? I've used Microsoft products since I bought my first PC in 1990. I'm nearly 65 and giving serious thought to switching brands. I don't expect perfection, but I don't expect this much frustration either.
‘ELM-01’ it’s not as drastic and dramatic as you make it all out to be, I’ve used windows longer than you have (since Windows 1 in the mid 80's) and I’ve been more than satisfied with its progress and long service of an excellent product. I don’t know what system and/or imbedded system you have but if you have an imbedded system, there is where the problem lays. Updating from one version of windows e.g. like your 1709 which btw has allot of updates (which and by the way, you have described ‘that you have turned off automatic updates') and its probably not complete, then with 1803 you must have stopped it half way and must have completely messed up the file system through the 1803 update, you are not suppose to do that, windows warns you about that and that is why its running at snail pace. I've built many computers and have used many window system and their updates, I have never ever had your problem(s) including W10 versions 1709, 1803 and 1809-17763.55 without any problems 'what so ever' and they all worked and are working perfectly, hence and that is why there is a procedure and you require certain updated files for windows update to work. Denigrating a product without knowing what you are talking about or doing is a very easy and useless thing to do, cheers!