Mysterious Text Entry

[zMCFX2]

I've been getting this absolutely confounding problem. I use my rig to mine bitcoin when i'm not using it, using NiceHashMiner. I'm also running in the background these apps:
DS4Windows
Discord
HFS
Nvidia GeForce Experience
Logitech LGS
Steam

Sometimes, when I leave my PC running, mining for some time, and I come back, it will automatically type things on its own at an extremely fast speed. There are lots of carriage returns so if i have a chat window selected it gets sent into chat before i even realize what's going on. I'm wondering what the hell is happening!

Here's a sample of what happens (newlines manifest as the Enter key being pressed): https://pastebin.com/BjD4i4iJ

I'm a little concerned over how and why this is happening. Does someone else have access to my computer? Even if someone did, why would this happen?

I've noticed these patterns:
-Partial words, or missing spaces between words
-They use a lot of words I use, and plenty of characters I almost never use
-Many lines start with a /
-lots and lots of 'wasdl' characters

This has happened three times so far, the first time when i had notepad++ open, the 2nd time when I had the command prompt open, and the third time when I had discord open. It always happens when I'm at my computer, never while I'm away. To clarify, I definitely have never typed any of these things, so it's not like it's spewing out input I put in earlier either.


Hardware:
i5-6600K @3.9GHz
ASUS ROG STRIX GTX 1080
3TB HDD
480GB SSD
500GB HDD
2x 1920x1080 monitors
1x 1280x1024 monitor
Windows 10 Enterprise, fully updated at time of writing

 

[helpstar]

First of all, scan your system with malwarebytes

is your controller on while this happens?

if you disconnect your keyboard, does typing stop?
which keyboard is it?
wireless?

BIOS of your motherboard is up to date? which one is it?

undo overclocking