Monsieur Z wrote:I don't think there is a synchro conflict between the Avocet ad the Hammerfall, there is only one connection from the RME to the avocet, if a synch problem was there I would have it with every program, not just PMX.
In the Pyramix Settings > Hardware > Formats&Sync page, on the right side under Audio Synchronization, what is shown in the Master Sync field? The Source Field? On my machine, there is only one option for both fields, so there's no choice. On your system, I would imagine that the Hammerfall automatically slaves to the Avocet, but I'm curious as to what is shown in the Pyramix Settings window.
(Side note: Accessing the Hammerfall's Control Panel is best done through this Settings page when Pyramix is running, so that changes made there are immediately recognized by Pyramix. Calling the settings from the Hammerfall's Notification Area icon can sometimes cause some instability.)
As you mention, increasing the buffer size makes things worse.
Worse? That's strange - a larger latency buffer should reduce any clicking and popping, not make it worse. Are you running any processor intensive plug-ins? Any concurrent programs or operations? You've mentioned that you've disabled Avast, but could there be any other process running that could affect your computer's performance? A tool like LatencyMon -
http://www.resplendence.com/latencymon - could help track down likely culprits.
I experimented with the playback look ahead buffer in PMX setting, level 4 seems to be a tiny bit better (still random clicks, but less)
On that same page in the Settings, have you changed the Record Block Size to anything but 64 KB?
PMX's playback performance tab shows that I have 100Mb/s at the beginning of playback and up to 600 Mb/s transfer rate after a couple of second, which, with a 8 tracks 192 kHz project seems a tad exaggerated...
I'm afraid I become a little bewildered when looking at that window - when playing back a six track, 96 kHz. project for the first time, my Transfer Rates are usually quite low, but if I stop playback and then immediately start again, the rates shown are much higher and can be all over the place - ramping up, down or just remaining so high that the panel becomes a solid green band. If I switch to a different project, or even just a different playlist within the same project, the first playback will show low Transfer rates, but any subsequent playback shows higher, although usually it's only for a short time, and then things ramp downward. At all times, playback proceeds without any clicks or pops, even if I reduce my Fireface's latency to 128 or even 96 samples, even when the displayed Transfer Rates exceed 2000 Mb/sec. Perhaps someone else has greater insight as to just what is being shown in that window.
) it is for asking some help. 
