I'm a bit of a noob, so bear with me. I recently shot a vlog with my phone in 4k at 30 fps (29.97 fps). When I watch the raw clips on my PC, they looks nice and smooth. I uploaded them into Vegas 14, put them all together and rendered with 4k resolution at 29.97 fps. Any option that would allow to set as "best" quality, I did so. Once rendered, the motion blur was horrible! Not like the original footage. Also, in the past, I've shot video in 1080 60 fps, then rendered as 30 fps, and got the same horrid motion blur, only after rendering. Here is a link to the finished vlog on youtube. It's unlisted for now.
I'm rendering it again with some slightly different settings, but I'm not sure why I keep getting this motion blur only after rendering. The original files are fine. Any help would be much appreciated!