Using ADAT connections to EMU is fine, it works perfectly.
Using an analogue send-return on the MOTU both to a Compounder and an RNC I get unusable delay resulting in serious flamming, even with the delay set at various settings up to 100ms and with sample buffer sizes up to 1024 - the latency becomes terrible but the flamming stays put. I also get some nasty humming when I don't send any signal for a while.
I went back to SX2 and set up an "insert" by routing an output track directly to the Compounder as described in MW's article about integrating hardware FX in March SOS, and this worked perfectly well - when I set the sample buffer size to 512, the delay was not noticeable (by me anyway), and there was no hum when I turned the gain up a bit and left it there. Does that sound like a reasonable test to ensure that it's not my setup?
Anyone else tried this? I've not been able to find anything similar on the cubase forums, except a big list of bugs they want us to test the fixes for when the "maintenance" release comes out in November ...