For the type of content you are producing and the codec you are rendering to, there is no reason for you to be operating in 32-bit Full mode. Switch your project settings to 8-bit and you will massively reduce your compute cycles.
Here is a workflow to try:
1. Game capture file
2. Vegas new project, drag and drop on to timeline. This should make the project settings match your source file. You can alternatively use the “Match Media” button on the project settings window to do the same thing. “MediaInfo” installed on your machine also allows you to see the media format that your capture system is outputting in detail.
3. Edit project on timeline.
4. Render to Sony AVC 1080-60P profile, or a profile that exactly matches your project settings. If your project settings do not match 1080-60p, then correct your game capture to cap at 1080-59.94P, as 59.94 is the actual stream format that YouTube and others operate at. An FPS setting of 60 even can cause frame rate conversion issues that appear as picture artifacts in high motion events.
Your bit rate on the render template is excessive. If you are uploading to YouTube or a similar service, those services only stream at 8Mbs@30P and 12Mbs@60P. Selecting a Sony AVC profile and changing the FPS to 59.94 and the bite rate to 16Mbs will yield enough picture quality to toss out the extra info at the encoding service. You videos are re-encoded once upload. There is no reason or quality benefits to upload more info than needed.
https://support.google.com/youtube/answer/1722171?hl=en
For YouTube, I render 1080-30p material in XDCAM-EX which is 35Mbs, is standardized and optimized in Vegas, and yields great results. An XAVC-I 1080-60P profile would also be a good choice for what you are doing, as that codec is highly optimized in Vegas. No need to re-invent the wheel on MC encoder profile settings.
A long time ago, I used to create WoW BC raid videos for my guild, and uploaded all the raid stats and video within 12 hours of the event. Those were some long hours. Today things are so easy, what with sites like Twitch and live posting of stats.
Rendering an 8-bit project, to and 8-bit encoder, to a 16Mbs profile will greatly reduce the render times and get your videos uploaded faster.