Yesterday I reinstall windows and I install fresh Vegas 20 but today I cannot render any video in 4k and the problem exist only when I want to render it in 4k.
Yesterday I made some corrections in my clients movie in 1080p and everything works fine, render complete fine too without any crashes, frame drops etc. Today I made some tests with my new camera S5 II and I wanted to render it to 4k output 3840x2160 but I can't. Vegas is making artefacts in random places I tried to render it twice and everytime it made this things in differents spots and time. In playback everything looks great even in preview while I am rendering there is not any bugs, everything looks perfect. I thought that will be Media Player Classic error but when I imported that file into vegas the artefacts still exist.
I use only color grading effect in Track FX with my LUT, nothing else.
My render settings and project settings are on screenshots.
Before I reinstall windows issue appear too so I thought that could be some windows errors that's why I reinstall it.
Ryzen 9 3900x
Geforce GTX 1060
Vegas 20 v. 326
As at this short movies it does not bother me but I wonder it would not be the case in future movies when I will have to render 60-90minutes wedding movies and in some point this artefacts will appear...