On OS X, so a different configuration. Generally, AU and VST 2.4 plugins perform as expected within Resolve. I have yet to experience the issues you have, but then I don't use any Waves plugins.
Currently, I have a short list of 9 AU and VST plugins that have very specific issues with Resolve 14. Mostly the issues relate to UI anomalies, AU plugin window resizing, and incorrect registration of inputs (i.e. the plugin is stereo but only provides a mono input, or no input at all).
To put that in to perspective I have tested roughly 100 AU and VST plugins from a variety of different plugin developers with Resolve and only 9 have very specific issues.