How to export a video containing 24, 60 & 120fps - No slow motion & high quality image wanted

I have created a 5 min video that includes audio & different frame rates (24, 60, 120fps). When in editing mode the video plays in real time and has a high quality image. I want to export the video in real time and the images at high quality. 

When I exported in 120fps the majority of the video was in slow motion which I don't want. 

I did manage to export the video NOT in slow motion however the quality was noticably reduced.

I also tried 'interpret footage' which then slurred my audio. 

Some help would be greatly appreciated.