Thx, I tweaked db access little bit further in patch branch so I have with your database delay about 2secs (I don't have very state of the art laptop where I debug and code things ), before it was around 60 secs .
I can speed up this issue further but that will involve database changes and I'm short with time for 1.6.0 so I will do that after that release. IN the meantime, my humble advice is that you put your videofiles in some sub-folders under main share because having 2000 files in one is little bit too much and hard to maintain externally . Just think how would MP sources would look like all in one folder , I think only divine power will find there what you want .
Anyway, thx for your database, now I have perfect test subject to check patches .