I've recently upgraded a bunch of components in my PC and now it runs really poorly. Stutters, takes ten times longer to boot up, reduced frame rates in-game etc. I've tried a few basic things to improve performance but had little or no success. Iv'e updated all the drivers, stopped a bunch of programs starting on boot up, etc
Intel Core i9 9900K
Gigabyte Z390 AORUS ULTRA LGA 1151 ATX Motherboard
Corsair Vengeance LPX 64GB
Gigabyte GeForce GTX 1060 WINDFORCE 6GB
Corsair RM-650 650W 80 PLUS Gold Power Supply
Cooler Master Seidon 120XL Liquid Cooling Solution
These upgrades weren't all done together so there are a few older parts in there like the power supply and cooling, but everything else is less than 6 months old. The most recent upgrades being the i9 and Z390 and an extra 32gb of RAM. Oh, I also bought a new ASUS ROG Swift PG279Q monitor.
So i'm pretty new to building/upgrading PC as I'm just getting back in to it after years on console and this is the first time I've really don't anything myself. (Previously just bought stuff pre-built) So am I missing something here? Did i completely f*ck up on specs? Do I need more power? I ran everything pcpartpicker to check compatibility and it came back ok.
Please help duders because I'm out of ideas.
Thank you in advance.