Optime playback engine setting for Ezdrummer

[Recon66]

Hi,

This could be too late to post here, because I have gig to night and I need quick support.

I have mount EzDrummer instrument to protools and trick midis from Roland drums. Everything works fine... until something happen. Playback out from the system suddenly change to sound like robot. When changing the playback engine's setting (buffer size), sound will change to normal, but after 5 - 15 min something happen and again drums sound like robot.

Does anyone had same problems? If had, can you give me your playback engine settings.

BR

-R