Hi,
I’m a fresh owner of the prime 4+ - just have this in mind 
I created my library on the computer (tried both Mac and then also Windows PC) and synced to internal SSD drive and external SSD sticks.
When I search for tracks on the prime 4+ everything is fine when using internal drive or TIDAL.
But when use a stick, the responding time for the track search is between 1 and 2 minutes to come back - unusable for live events as you can imagine. Ad the player seemed to be pretty busy.
I tried a lot:
- using 1TB stick as well as 2TB external SSD drives
- formatting them with ExFAT on Mac and Windows PC (windows make the stick faster for whatever reason)
- my playlists contain 45.000 titles - so under the recommended limit of 50k - size is less than 400GB
- sticks / external drives checked with CrystalDiskMark - fully ok on sequential read, pretty bad for random reads
- I use newest stable version (3.2.0) on desktop and OS.
so what do I wrong - colleagues told me their response times are at a couple seconds - what is totally acceptable.
Cheers Greppie
BTW: this is how my library looks like:
