Question 4K60 rendered video stutters/glitches

[dinohatemic666]

The video turns out like this:

View: https://www.youtube.com/watch?v=D0tZkMKFzw0&feature=youtu.be



GTX 960 2GB

Ryzen 1700 3GHz

2x8GB 3GHz


Recording with Shadowplay @50Mbps 1080p60

Rendering with Vegas Pro 16 MAGIX AVC @50mbps, 4k60, NVENC


But rendering with CPU gave no problems, but it takes way longer to render even with Ryzen 1700

I want to render at 4k60 for maximum VP9 quality on youtube, rendering with NVENC at 1440p60 causes no issues, but the video upscaled to 1440p looks uglier than 4k60

Is it because of 2GB VRAM? Can't handle 4k60?

By my logic, it could be, but I'm leaving answers to the experts here in high hopes of fixing the problem

 

[cherry blossoms]

Video card hardware encoders trade quality for speed. No getting around that. You are relying on a feature set optimized for speed in 1 pass mode.

The Turing implementation of NVENC is supposedly better than Maxwell series chips btw.

Can Vegas pass encoding parameters to NVENC?, say something like:

-c:v h264_nvenc -preset medium -b:v BITRATE -bufsize BITRATE*2 -profile:v high -bf 3 -b_ref_mode 2 -temporal-aq 1 -rc-lookahead 20 -vsync 0