OK this works really well. For the first time I am getting server to work with big loads on PC slaves. I am running VE on an i7 slave with 24Gbs of RAM and I have 18gbs of samples - VSL, Play3 and Kontakt5 all running really well into DP on a Macpro. It sounds so much better than the ADAT hardware route I've had to use up to now. The midi insert workaround thing is a major turning point and seems to work fine
Anyway thank you!