Question / Help Why does this part of my video look bad?

[Ivegotaproblem001]

https://www.facebook.com/DoubleDropUk/videos/1560780184037566/

The intro here I learned to make today with Sony Vegas. Exported at 1080p HD as a .avi file, loaded into OBS. Looks like garbage when I record it at 1080p. Anyone have any ideas what im doing wrong??

 

[Ivegotaproblem001]

the original video looks great, and all other scenes look fine, its just my home made videos. I must be doing something wrong.