Sorry guys, we are aware of this and our team is working to improve it. In the meantime, here are some tips to improve performance:
1) Disable any modes / features you don't need, eg. DVS, Video, Lyric, Lighting - they're enabled by default, so open the preferences and toggle off the ones you aren't using.
2) Disable the preview waveform column in the collection by right-clicking the column headers and un-check the preview column.
3) If you're still noticing a slow scroll through the collection, there are two other things you can try - one is to open the Preferences > Advanced > Browse, and check the "Display Playlists Quicker" check box, the other is Preferences > View > Waveform Drawing Rate - change it to a lower value.
Unfortunately AMD processors are still not supported since they still don't handle data quite the same way as Intel CPUs, and as such, may be more likely to experience audio glitches / pops / clicks / etc., as well as sync issues between the visuals and audio. We are aware that they have certainly come a long way in the last 2 years on the new Zen 2 architecture, and we hope to be able to provide support for them in future.