The only way that a mere 10 seconds is “too slow” is if you’re not making use of the full range of options on the Prime 4.
You’ve got 4 decks and a prepare list.
What I do is plan
I know that at anytime before the bride and grooms first dance, I could need to load and play their first dance song, so, I’ll load that to deck 4 even before the evening reception begins.
As friend and family guests hand me their requests on paper or talk to me about their requests during the nights, I add those into the prepare list so that I’m not searching through thousands of songs, just scrolling through the 60 or 70 I need. I’ll also add difficult to dance to songs to the buffet playlist before the buffet.
So when the bride calls out for you to cut a song because she hates her guests request, or some guest request has killed the dance floor action, or uncle Phil comes up and says he’s ready to do his party Caberet NOW! You can just go to the prepare list or b&g playlist or one of your 4 decks. The rest of the solution is improving your own workflow to make use of these given features.
Searching twice as fast, in 5 seconds, or four times as fast in 2.5 seconds, or 10 times as fast in 1 second… is still going to need you to run the search and that means going to the search screen, pressing the magnifier to get the qwerty keyboard up, typing in the name or song title, pressing search then scrolling your finger through the results etc then pressing or swiping whatever you’re going to do with that track like save it to prepare folder or add it to a playlist, or load it to any non playing deck - so it’s best that all that pressing and typing and scrolling through results is done &before& you need the song, not &when& you need the song.
This is exactly what 4 decks and prepare lists and playlist are for.