Odd looking Artifact Overlay on Videos Recorded in OBS Is really BAD

[SGTDRE]

Hello one and all, Still very new and trying my best to learn / understand OBS, I'm not doing anything extraordinary, maybe do a few videos here and there, not streaming and even that I sill need to get a handle on.

But...
This Odd looking Artifact Overlay on Videos Recorded in/with OBS Is really BAD, and being a complete NOOB to OBS, I have been trying to use different settings, but I'm at a loss. I tried searching and have not come up with any answers.
I attached two files with media info for the two video recorded that I have linked below, I have them unlisted because they are only to show the recorded video with OBS and the Window of OBS as the game is played.

System Recording Video:
OS: Windows 7 x64 Ultimate
GPU: EVGA Titan Z
CPU: 17-4790k 4.0Ghz Haswell
Ram: 32Gb Corsair

Also I have the Full K-Lite Codec Pack installed latest version.

Video Recorded From XB1-X through Mirabox HD Video Capture USB 3.0

Video One File Size 108MB
Fallout 4 Recorded With OBS 2020-08-02 16-16-35

Video Two File Size 198MB
Fallout 4 Recorded With bandicam Thru OBS 2020-08-02 16-31-09-195

https://obsproject.com/logs/4CKAGN1Drd9aD389

 

[SGTDRE]

Would anyone have any idea how to correct this or at least reduce it?

 

[Harold]

Settings - output
output mode: simple
Recording quality: indistinguishable
Recording format: mkv
Recording encoder: Nvenc