My experiences are the polar opposite of yours, but you shouldn't be downvoted for being wrong. :)
Re:Microsoft Support of PHP on Windows
by giancarlostoro on Friday July 10, 2020 @07:59AM
(#23790606)
I dont think he is entirely wrong I had similar experience except in my case whether I used IIS or Apache with PHP didnt matter as much with my particular apps.
IIS is fine if it works just like Windows apps generally are fine when they work its the odd time where it breaks that you are mystified about the whole thing.
>>With Apache, it's an unstable mess
I've found it to be pretty good using FastCGI.
With Apache, it's an unstable mess. IIS on the other hand works extremely well with PHP, we've had virtually 0 issues in more than 10 years using it for many different projects.