Update: I wrote original post below being fully frustrated after a week of failed rendering attempts. But here is a clear indicator on why I have stuck with Vegas and will continue to do so. This forum is full of clever people willing and able to help with strange issues that can come up with Vegas. My issue was solved within few hours after posting it here on the forum.

Really valuable.

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Just wanted to share my rendering experience and see if anyone has experienced similar behavior and possibly has some solutions.

Source material
I have edited a 60 minute long video that is a combination of 4096x2160 24p source videos from:

• Olympus OMD em1 mark II - 8 bit
• Panasonic GH5 - 10 bit 422 - V-Log

I am not doing any heavy effect work. Occasional neat video to fix noise in few scenes and then color grade the V-Log video using Magixs built in LUT filter.

The problem:
The program was pretty slow while editing the whole video. But once I prevented it from fully using all CPUs and stopped using thumbnail view in project explorer I managed to finish editing. Had maybe 3-4 crashes.

But now I have been trying to render the project for a week and it still has not been able to finish rendering. So far I have experienced:

• 5 times Vegas Pro crashes to desktop on arbitrary point in the rendering.
• 2 times it has managed to "finish" the rendering but then stays stuck at 100% indefinitely. Never allowing me to close the render dialog box. (The final render file is nowhere to be seen in destination folder)
• 4 times it has managed to "finish" the rendering process and I can ack that and close the rendering dialog box. Then I see the file in destination folder but it is only 0bytes and contains no video.
• 6 times it has started rendering but at an arbitrary point it stops advancing to next frame and just continues to "render nothing" until I cancel the rendering.

This is so frustrating.

I have successfully managed to render two parts of the video to a file... the plan is to eventually manage to render the whole video in parts and then try to re-render those outputs into one whole videofile.

What have I tried so far?

• Disabled Norton Antivirus (and turned off all unrelated programs that are running)
• Tried newest and older drivers for the graphic card.
• Tried to render to H264 with and without GPU
• Tried to render to HEVC with and without GPU
• Tried to move my project folder to a larger drive (the default folder was on C drive that has only like 13GB free)
• Skipped the Magix Vegas LUT filter and used FilmConvert instead.
• Upgraded Vegas to 307 version.

Please note that I cannot disable the often mentioned so4compundplug as I need it to be able to use the GH5 10bit source material.

My computer is:
- Intel 4770K
- Nvidia 1070 8GB GPU
- 16GB 1600MHz DDR3 RAM (2G used for dynamic preview). No other programs are running.
- Source video files on a 4TB disk. Destination Render folder on a seperate 3TB disk.
- Running Windows 10 64bit.
- While editing I had Vegas create proxy for all 4K videos.
 

This is unacceptable working conditions. I am really happy that I am only trying to create this video for myself but not trying to deliver to a customer. But given all the issues I am having I don't think I will be editing my next project in Vegas.

Has anyone else been experiencing similar issues with Vegas Pro 16? And if so.. has anyone found any solution or workaround?

I just refuse to accept that this can be a common problem because the program is borderline useless in this state.