Logic + Imac, Strange behaviour Options

[jobody]

Hello,

I'm new to MacMusic so hello all!

I just upgraded to a 24inch imac, 2.66Ghz - 4gb ram. I am running logic 8 with a fireface 400. Everything is great apart from when I have a fair few tracks running (eg 12 audio and 12 software) the response time from clicking and dragging a fader or knob is really slow. I have to wait a few seconds for it to catch up with itself. This seems strange as there is no CPU overloading. I have checked activity monitor whilst logic is playing and there is loads of room, (70% of CPU remaining + over 2Gb of ram spare).

It is also a bit slow when copying and pasting parts of tracks.

I have the Audio driver Buffer set to 256 although changing this makes little or no difference. Also I have Universal Track mode on, Software monitoring on, Large Process Buffer Range.

Also my fireface is up to date.

I am baffled and would really appreciate some help!

Cheers.

Joe

[lepetitmartien]

Hello

Are you reading files/recording to your system drive? If so, use another external (firewire) hard drive for this, using the same drive for system/apps/virtual memory and for playback/recording just doesn't make it in OS X.

[jobody]

Cheers for your response.

My firewire is in use with my interface, is there another way round that you know of?

Thanks.

Joe

[lepetitmartien]

Either you record/read on a drive in firewire (it should work, it may not) with the interface chained or you use a USB2 drive.

USB2 is not the primary choice, but it'll work good enough hopefully.

[jobody]

Thanks, I will give this a try and let you know what happens.

J