Windows 11
Windows 11 OS has been the most useless upgrade of Microsoft with highest number of bugs. Mid performance laptops like dell 5510,i5 11th gen(nvidia mx450) which in my case also cannot run smoothly on windows 11. I have got a ton of issues on gpu, display and bugs where display rendering issues and blue screen error messages appear. Even the dark mode sucks. Biggest downfall for Microsoft in terms of stability 👎🏻
