Hi, I’m looking desperately for a solution too about this issue. We are working on a Mac Pro and an iMac connected via ethernet cables to a Mac Mini which is our server and shares what we need to access on a Pegasus Raid 5.
We’ve been working on a super long project for the last weeks so we kind of know that the slow times and the unexpected quits that we are experiencing are not really what we’ve seen form the first weeks into the project.
The same workflow that used to take us few minutes to render a 1080 timeline is now taking the Mac Pro a good 15 – 20 minutes of export for a 5 minute timeline in Prores (not HD). On the other hand, the iMac is now showing 55 minutes remaining and is now at 46% of the export. Basically, it’s now hell. We’ve tried many things but nothing seems to give us back the speed we had in the first 2 weeks. Also, we have a third computer that is not connected to the server, an old 2009 iMac that we use once in a while for editing and this one is also very ill. The export won’t even go through and it quits before it gets to the end of the export. All three computers got the 10.10.3 updates and the reason why I went with it is because I tough the update would help with the slowness we started experiencing. It seems to always get worse day by day.
At least, the big project is almost over but we are now late on many others because of this.
“Happy” to see I’m not alone. Can’t really figure out what this is all about cause I feel problems started prior to 10.10.3 update… but it sure did not help at all.