video playback problem

[oleg_kazan]

Hi!

I have cat 4.40 m364 on Mac Pro 2010, Quadro 4000, SSD 240Gb for content.

Second screen - via th2g 2 x 1920x1080x60

I try to play movie 3312x480 25 frames/sec Photo jpeg from QuickTime player.
File have a 5 GB size.
It's playing smoothly.

When i try to play this file from Catalyst it's playing with some delays.
As well as while playing i will copy some files on same disk.

I made a copy with AIC codec from Cat - 1,5 GB. The same delays.

I try only 1 layer, no inputs.

Play mode - PL Audio.

Help! Need decision!