This is a big issue for me. I'm stuck using Windows for work, and it runs like an absolute dog even on good hardware.
Why to a crawl? Well, I've witnessed multiple antivirus products go bezerk on your dev folder if you compile C++. Turning them off for this folder increased performance by a factor, which is what's typically done and completely subverts the purpose of these products. Also, I witnessed a certain product with a bird of prey that would run for hours and then just crash on a directory with a few million files.
This combination of sub-par quality of "security" products and performative deployment of endpoint security is a bane, at least for me as an enterprise software developer. I don't see Microsoft being primarily at fault there.
Even continually sticking to old design patterns causes issues in development and deployment. Big name companies do not trust applications running on hosted Windows because of their current business practices. Microsoft does not even have a means to provided ease of deployment for air-gap system. This is the only way some big business will let products hosted on Windows to be in their facilities.
Windows as become more problematic for me because of all the layers of security that need to be applied for companies to trust Windows. This causes issues such as having to stop typing because Visual Studios or VSCode cannot process key strokes in real time.
Localization translation text standard still does not allow for containing singular and plural in the same key. Translations should be easily to update so the client can improve wording on the fly. Microsoft still recommends using resx and compiling a DLL.
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