You're not the first person to have trouble with NAS drives sadly - they often seem to have exactly this problem and many people have tried them and then given up and switched to either a plug in USB drive instead or gone for a larger drive in a separate PC. Our guess is that the NAS drives don't have as much memory and not as intelligent forward caching as when the drive is in a full PC running a full operating system and thats why they struggle when lots of different information is accessed several times in quick succession - i.e. as Myriad launches it reads in parts of the audiowall, then ICs which results in more Audiowall reads, followed by the user logging in, triggering more reads of Audiowalls and log information etc.
You could try sticking myriad in debug mode and see at what point in the logs it starts to slow down, but I suspect it's more that the NAS just can't preemptively cache the information Myriad is going to ask so ends up stalling myriad whilst it hurrys to read each item effectively on demand from the platters causing bottlenecks.
Someone else may have some useful experience though - worth searching these forums as I know there are a few people who have asked about NAS's over the years
Peter Jarrett, Technical Director
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