Vegas Pro 14.0 on Windows 10. I notice that the "elapsed time" dialog box during rendering wraps around to 0 after 24 hours. Not the most serious bug, but it doesn't seem the desired behavior. And yes, I do need a faster computer if I'm going to be doing any more long-format 4k projects like this.
We suffered through remediation of a "Y2K" bug because programmers didn't anticipate that programs would last until the turn of the century. Perhaps, the Vegas programmers thought no one these days would have the attention span to remember a render was still running after 24 hours.