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Thread: How reaper effects CPU

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    How reaper effects CPU

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    I'm loving the fact that reaper let's me add unlimited tracks without faffing around with bouncing or having random guitar bits on the same track before live mixing...however...although I'll be upgrading my laptop before long, I'm nearing the end of my first ' proper' recording on reaper. I'm upto 17 tracks most of which just have cockos compression, dragonfly reverb vst and a nebrini guitar sim as plugins. I'm just starting to have problems with Reaper occasionally not responding, the odd crash and very occasional random crackling when I move a fader or play with levels of reverb.

    I'm guessing the number of tracks (and plug ins on each) is causing the issues due to my fairly low spec Acer laptop. I've probably got a few more tracks to add so wondering if I should try and combine some tracks ( where parts don't overlap) and manage that inconvenience with automation / envelopes. Woukd it make any difference?

    Also, would a laptop running near the limit of its CPU cause the finished wav file to be of poorer quality?

    Cheers Mark

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    See if the "freeze" track feature helps reduce that.

    I don't think it is the number of tracks that is giving you problems but the processing on the tracks. Also, if you are not tracking anything analog, increase your buffer size. Lower buffers strain your computer resources.

    But freezing the track (you can still adjust sound) and increasing buffer will give you a lot more resources.
    DM60 Tunes: The Collection

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    With actual spinning discs and a lot of recorded media you can end up with disc read underruns where youíre basically asking for more data off the disc than it can do in the time allotted. Especially if itís near full and/or badly fragmented, it could be a thing.

    It sounds in this case more like CPU. Reaperís Performance Monitor will show you what itís doing to your system and might give you a hint.

    If is the CPU, then you can pick whether you want to render or freeze or apply FX and remove the plugins. If itís the disc, this wonít help. In either case, increasing your ASIO buffers should help quite a bit. You donít need ultralow latency when mixing.

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    I think my first question would be whether you need individual tracks to each have their own instance of a reverb plugin. You could set up a few tracks, each running their own instance of each flavor of reverb that your project needs, then send individual tracks to the reverbs. This will cut down greatly on the CPU load of the project.

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    Quote Originally Posted by mcmac74 View Post
    I'm upto 17 tracks most of which just have cockos compression, dragonfly reverb vst
    Are you inserting the reverb directly on tracks? The usual method is to use a shared reverb (set to 100% effect, 0% dry) on an effects bus and aux sends from each track. (Note that terminology might vary regarding "effects bus" and "aux sends" depending on the DAW, but the concepts are the same.) That way you save a lot on CPU load, and it puts your tracks in the same space. Once in a while I'll have a "special" reverb just for one track, but the main reverb is still shared.

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    Quote Originally Posted by Tadpui View Post
    I think my first question would be whether you need individual tracks to each have their own instance of a reverb plugin. You could set up a few tracks, each running their own instance of each flavor of reverb that your project needs, then send individual tracks to the reverbs. This will cut down greatly on the CPU load of the project.
    Quote Originally Posted by bouldersoundguy View Post
    Are you inserting the reverb directly on tracks? The usual method is to use a shared reverb (set to 100% effect, 0% dry) on an effects bus and aux sends from each track. (Note that terminology might vary regarding "effects bus" and "aux sends" depending on the DAW, but the concepts are the same.) That way you save a lot on CPU load, and it puts your tracks in the same space. Once in a while I'll have a "special" reverb just for one track, but the main reverb is still shared.
    Yes...each track has reverb added as a vst. I'm not tweaking the preset too much so that the tracks are in the 'same space '. It would make sense and save time to have the reverb fed to each track rather than me having to add manually...however I wouldnt know where to start getting an effects bus set up. If there's a quick start guide anyone can point me to, that would help. 👍

    Cheers
    Mark

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    To create a parallel effects bus in Reaper, what I figured out is that you:

    1. Create a new track (with no audio clips in it).

    2. Add the reverb to that track's inserts. (Set the "dry" to 0% and the "wet" to 100%, or set the mix to 100% "wet" or "effect" or whatever it takes so it's just reverb coming out of the effect with none of the input returning to the mix.)

    3. On the tracks you want to use the reverb with, add sends routed to the reverb channel.

    4. Use the sends to add more reverb to some channels and less to others, if desired.

    Voilŗ, a classic effects bus.

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    Now that you have an effects bus you can get clever by adding eq, compression or even gating before or after the reverb. You can even stack a delay on it. You would probably want the delay wet/dry mix to be balanced.

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    You mention that your Acer is low spec. Not sure what that means....so give us the specs if you can. First and foremost.....your PC performance is key and certainly can and will affect and DAW performance to the extent of the specs. Reaper is one of the least CPU usage intense DAWs I've ever tried so you'll likely get the best performance results possible using it. Many 3rd party VST's are CPU intense. Be careful with them. Reaper's VSTs are excellent. Use them when you can.
    Just A Song Writer..........

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    Quote Originally Posted by mcmac74 View Post
    It would make sense and save time to have the reverb fed to each track...
    That’s the opposite of how it works. bsg gave you the key.

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