Possible Storage Bottlenecking

[jacobpm1]

Now that I have seemed to have found the right Forum page

About a month ago I decided to install COD Warzone, and things were going great, my system ran it fine, no frame issues, lagging or anything at all until an update came out for the game and then I seemingly couldn't run it for longer than 15-20 minutes without it crashing. I tried a couple things, changing setting to favor preformance in GeForce Experience, trying to adjust different settings in GeForce Experience, sover clocking my GPU, in which nothing really prevailed, and I believe its all due to my hard drive, after all I would run my task manager while playing Warzone and everytime it crashed my Disk usage was at 100%, meanwhile my GPU, CPU and Memory was only barely being halfway used, sometimes not even close to 50%. I just ended up giving up on the game and figured I'd play it on console, no biggy. The issue is that after I uninstalled I seemed to have massive framedropping issues in every game that I would play. In games like Rust, Minecraft and Destiny, I would get unbearable frame drops (especially in destiny 2, it would piss me off to an extreme lol), in which I would be playing and every 3-20 seconds I would just be getting horrible frame drop from 60 FPS down to the 20s or even 10s, and I would just give up playing games because I couldn't enjoy playing them because my frames would just take a shit every few seconds. Here is where I am at a loss, I tried multiple things and I have seen no return to how my system use to run, efficient with no frame drops what so ever. I tried multiple things to see if it would fix the issue, Defragging my Hard Drive, scanning it for bad sectors, enabling write caching and just deleting large files that I dont use anymore. I come here in hopes that someone can help resolve  the issue, I am really a Novice when it comes to any computer fixing or troubling shooting or anything like that (as you can probably tell in reading all of this) I mean I built my own PC but in all honesty I am not the most technology advanced person. so like I said I am just reaching out in hopes that someone who knows way more than me can help.

I am sure including the parts to my build may help some people understand what the issue is better, or maybe not at all, but reguardless I will include them

Motheboard: MSI X270 Gaming Pro Carbon

CPU- i-7 7700K

Memory- 2 of Trident G.Skill 8 GB

GPU- EVGA GeForce 1060 3GB SC Gaming

Storage- Western Digital Caviar Blue 1TB

I think its clear that out of all the parts I decided to cheap out on storage and got a HDD because I thought getting alot of cheap storage would be better than getting a little of fast storage, and I think that is defiently a lesson I have learned this path month. In the future I do plan on getting a SSD to add onto my build for obvious reasons, but for now I am stuck and hoping someone can help, thanks!

[Statik]

A bit of a wall of text, so i maybe have missed it, but how full is your HDD?

[jacobpm1]

Nope, I did not add that info, but it says i have 324 GB free out of 930 GBs