Question Hi, I don't really know whats going on with my computer. I need help troubleshooting how to fix my issues.

[BADAZZMEDIC]

I've had my computer for a couple of years now and have upgraded it constantly since and I can't seem to understand why my games are stuttering and drop in fps everytime I play them. I've tried stress testing my system, however, I really dont know what to look at when it comes to HWINFO and AIDA64 and such. I just need help with how to understand what to do to figure out what i need to do next with my computer. Help would be much appreciated.
SPECS:
Motherboard: MSI b350m mortar
CPU: Ryzen 7 2700x
GPU: RX 580 8gb OC edition
RAM: DDR4 Anarchy X 3200mhz
Cooler: Cooler Master Hyper 212
HDD: Seagate Barracuda 7200.14 1TB
SSD: Pioneer 1TB SSD
In my games I have been experiencing this awful stuttering when I play them and I dont know whats making it happen. I've tried running cinebench and heaven benchmark and I really don't know where to start when it comes to troubleshooting my parts.

 

[rgd1101]

what the hdd for?
how full is the ssd?
how much ram?
brand and model of the psu?
cpu/gpu temp and usage during the game?