That isn't a great user experience as your presets are looking different when applied to Nikon D810, we're sorry to hear about this. Let us help make it right.
Please explain the issue you're facing in more detail with a brief description of your workflow. Which version of Lightroom are you using? Which version of Lightroom Classic are you using? To verify the version you're using : Choose Help > System Info.
I am curious to know why you are using the version 7.0 of Lightroom and an older version of Mac OS. Have you given a thought on upgrading your Mac OS so that you can install a later version of Lightroom Classic?