Why is Windows 10 so slow?

[Zapthos]

So, let me explain things. On Windows 8.1, with a 5400rpm HDD, my system boots up in 17 seconds or something (with post + welcome screen), but on Windows 10, with a SSD, it takes more than a minute to boot up. Both machines have simular specs, only difference in the SSD & HDD (but Win10 should be faster since it's got a SSD, right?). Also Minecraft is significantly slower, min settings gets 30-40fps on Win10, but with medium settings I get 100-120fps on Win8.1. With a lot of things there are major differences.

OS: Win10 / Win8.1
HDD: 8.1 SSD: 10
I5-2430M
8gb DDR3
GeForce GT520mx
Intel HM65 Chipset
Latest drivers & BIOS. Both run a clean install of Windows.

Can anyone tell me how this is possible, and if there is any fix for it? Thanks!

 

[Calvin7]

You should check with the Notebook manufacturer to see if Windows 10 is a supported OS.

 

[Zapthos]

You should check with the Notebook manufacturer to see if Windows 10 is a supported OS.

Asus told me that the laptop is compatible with Windows 10, but they don't have any drivers on their page. They said that it would be fine if I installed the drivers for Windows 7, and the drivers that don't work can be downloaded from the manufacturer's website (nvidia, intel etc. etc.) (asked it a couple weeks ago so that's why I know it already)

 

[Zapthos]

Wait.. I've tried it on multiple laptops and it seems like Windows 10 1703 and up are very slow and 1607 and down are very fast. What I did was, I installed an older build and boom now it's even faster than 8.1. I don't know what the problem is right here, but something is wrong with the CU and up. Fix your OS Microsoft!!!