@J Stevens >
1) Were you running the official 5.0 release? Because it seems to work properly for text and colour info when doing an instant double, and any new info saved is automatically shown on the other player.
2) When using a DJM-900NXS2, the audio effects are reduced to a single, parallel, FX module, so the SP1 performance is expected. You'll still be able to control each of the six FX.
3) How many tracks are in your collection? I've got over 40,000 loaded and don't experience that (but I also have a much more powerful computer). Is the CPU load indicator anywhere near the max? (Top right, beside the clock.)
@Mike > I believe I answered your question re: smart playlist lag when opening in another topic; please don't multi-post.