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I’m recording a song with only 8 tracks so far using EZMix and I find that when I use certain Ambient presets the CPU takes a big hit. I’m using a iMac 3.4 Ghz Intel Core i7 with 32 GB of Ram. Fusion Drive, etc. So I should have enough power to run a few instances of EZMix, etc. However, when I chose some presets on the Ambient pack the performance meter goes from 1/8 to almost 1/2 CPU Usage. With a few more effects I start to get cracks and pops. The EZmix instance is in Mono and I am using EZDrummer 2 as well. The only other effect is Cubase REVerence. In this case I am using the “Church Amp” preset which seems to be the problem (same with Ambient Amp 1 and 2 presets). When I choose another preset such as “Chorus Guitar” from EZMix1 or even “Bitcrush Amp” from Ambient) it retreats back to 1/8 cpu usage. Am I doing something wrong or is this preset a CPU hog? I love the Ambient pack… its sounds great but all the presets I use seem to be CPU heavy and will limit my amount of tracks. 


Hi,
I just tested myself on my MBP with different buffer settings @96kHz and that particular preset ‘Church Amp’ (utilizes 9 FX in EZmix) does indeed produce cracks and pops.
I can however use all the other ones @96kHz with 64 samples buffer, so I’ll investigate further.
John Rammelt - Toontrack
Technical Advisor
Thanks for responding. Please let me know what you discover. Most of the other settings are fine. Its just these presets (which happen to be my favorites and the purpose I got this pack) that are causing the pops and cracks issue… and I cant imagine it requiring a more powerful computer than what I have. Perhaps there is a need to investigate the plugins efficiency when using upwards of 9 FX… with only 2 or so instances on my project bogging down my I7 32GB iMac… I can only imagine what it must be doing to someone using a minimum requirement setup. Thanks again John.
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