Is your original video in 60 fps?
If not, make it 30 fps, thats enough for most cases.
85% quality is a nonsense setting for most purposes.
The default of 55% is already very good and you won’t recognize any difference,
unless you have a really huge monitor and very good eyes 
If you want even lower file size for your final video go for 50 or 45% quality - its still enough in most cases!
The quality settings do the best job when you want smaller file size!
Additionally you can adjust the GoP-Settings (Group of Pictures) to 30 or even 60 without loss.
Youtube wants a Gop setting of 15 afaik - but it doesn’t matter cause they re-encode anyway.