Davinci Resolve 16 Rendering Problems

I have rendered 4 others videos and admittedly I am new to using this program. So far it seems very intuitive to use, but yesterday I made a video with 24 clips and it will not render. When I preview the on the deliver tab, the clips all have sound distortion and the speed seems slow and it fails to render every time at 99% (after 45 minutes). When I preview the clips in any other tab, they appear fine. I'm sure I am doing something wrong.

Any help would be greatly appreciated.
Thanks
Luke

Hello, I have the same problem. I have come across this when editing my first ever video but after the render I played it and it was okay.