> You've got a couple of red flags in your system. The Liquidchannel may > not be playing right with your FW Bus, so disconect it when you're > trying to lay down tracks. > > You also have a MOTU 896 and a Korg Oasys in your computer. Really > strange stuff to have when you're using a FW audio set-up. This is > probably why you're having troubles. Is the Korg Oasys ever compatible > with OSX? I'm surprised if it is, because it's really old. The Oasys is in a B/W G3. It's connected via ADAT to the FF800. The LiquidChannel is the separate preamp box, not the LiquidMix. It is connected via SPDIF(and clock master, clocking works but is not completely stable either). The Motu is my old interface, brought back in service again because its CoreAudio driver performs better with a 128 buffer. The FF800 is only used as an ADAT/SPDIF/analog i/O & router so I can use its superior sounding convertors. It feeds the MOTU via ADAT & AES/EBU. Really elaborate, but this gives me the best sound and shortest latencies. Unfortunately, it's just not cutting it. So yo can use a 128 sample buffer with a fair processor load, say 60%. without clicks, crackles and dropouts? I've asked RME for a replacement FF800 months ago to make sure it's not just this particular FF800 acting up, but their service is terrible. I've had to deal with them a couple of times over the last five years or so, and they have been slow and uncooperative. Maybe I sould rephrase my question: is anyone able to use his Logic Pro setup with a heavy(>60%) processor load at an 128 (or even 64) sample buffer? Best, Zip Boterbloem Media Mechanics Zwaluwstraat 54 2025 VR Haarlem The Netherlands +31627014758 zip@knoware.nl