Let me explain... I decided to check how the latency was with the fireface 800 I just got. I'm set at 512 and decide to do a round trip through my 2 LA-610. The chain was, line out of the RME, line in of the LAs, AD96 and spdif to the RME. I took a drum sample that I played and recorded the re-amp version. I measure the time differencial with Auto align from sound radix and zoomed in the wave displays because I couldn't believe it. Zero sample of difference. This made me think.. is it possible that Sonar uses the buffer only when it needs it ? Which they had a buffer meter.. Thing is. . . when using a VSTi controled by my electronic drum on a clean project (no other vst) I get no latency. If I do the same on a busy mix.. I get a slight delay. How does that work ?? I get the feeling it wasn't like that with older versions... But then, I wasn't using the RME and wasn't running it on the same OS either..