Hello, I have a strange issue with my videos. English is not my native language but I will try to provide as much information as possible. After rendering a file to a video, the beginning is in low quality (look at the hair, they're missing details).
example:

here's the original file:

the video (you can see that just the beginning is in low quality, but but strangely just the character's hair :

I tried almost everything (dafault settings, different fps, bitrate, quality etc.). The file that was renderend is just a JPEG. I tried with different pictures, but they have the same issue.
Vegas Pro 16
Windows 11 22H2
I'm working with VP16 for almost 3y but I have never seen this issue before.
Settings:

Render settings:
