I do not believe that you can stop YouTube from processing the uploaded videos, whatever export settings you use in Studio (YouTube will use bespoke hardware to compress the video to the smallest size possible while keeping acceptable quality, and also to produce a range of different resolution versions for devices that don't support HD or ultra HD playback.
You can already make your own "YouTube compatible" export preset in Studio; in the Exporter choose the format as H.264/AVC and choose custom settings. Then save the settings as a user-defined preset.
Choose your custom export settings to give you an exported MP4 video that has acceptable quality when viewed locally, and does not result in an exported file that is so large that it becomes difficult to upload.
Regards,
Richard