What PDF Viewer can be used to present slides on High Sierra?
Just a few days ago I have asked the same question at tex.stackexchange.com. User DG‘ has provided a couple of useful suggestions, which culminated  in the following answer:

The delay in rendering pdfs with preview.app can be avoided with the following apps (they are all available through homebrew): 


Présentation.app: brew cask install presentation
pdfpc: brew install pdfpc
xpdf: brew install xpdf


Additional Remarks by Daniel


For those who prefer MacPorts: Currently MacPorts provides only the X11 versions, which do not work well for presenting full-screen mode. The homebrew variants are native. You can install them without doing any harm on your MacPorts setup.
The graphical Présentation.app and the console-based pdfpc assume a dual-screen setup and provide a presenter display with the next slide, elapsed time and so on. Both internally pre-render the PDF pages. Depending on the complexity of the slides (transparencies have quite an impact), this may take a while. However, the presentation output is superb.
Apparently, xpdf does not do pre-rendering. While it is fast in general, switching to a new slide causes flicker.