I opened a post about this xD
I've had an awful experience with Raid finder but its because I'm doing outdated content (but not so much)
I'm 2 primals behind, doing Seph and I haven't been able to queue and play Seph Ex. A very different situation from pre patch 3.4
Before the patch Seph was on Duty finder and had decent player base who queued for it. Now its a barren land.

I asked SE to move Seph Ex to Duty finder again, but my pleads had not been heard. Fortunately the community reacts to this and there are more parties on Party finder so i managed to get some (2) clears.