i'm working on a multichannel installation that will be up in a gallery for a few months, running pd (relatively simple patch that incorporates a few .wav files). i'm currently running this off of a mbpro (10.13.4, late 2012 - not terrible, but not especially powerful), which is also usb-powering a half-rack motu as the multichannel interface.
the mbpro is also my main laptop, and bc the show will be up for two months, i was hoping to run everything off of a very clean 2008 mb, but i just hooked this all up and the sound is really staticky.
question 1: is there something i can do to optimize the old macbook to get rid of the sound issues?
question 2: if not, what is the cheapest rig i can use as a substitute? i was feeling like a laptop is a bit of overkill anyway, but because i need this to run not just the patch but house wav files, the motu software, and power the motu, i'm thinking that a pi or an arduino (both of which are currently out of my experience set) wouldn't cut it? perhaps i'm wrong! i've run patches off of iPads/iPhones before using MobMuPlat and PDParty, but I need a USB-out to power the motu, and i also need to house a few gigs worth of wav files.
was thinking something like a refurbed mac mini, but the gallery people are going to probably need to start the patch each morning, so a no-mouse/screen/keyboard setup may not be ideal. looking to spend as little as possible as this project has already been a $-suck, but potentially willing to invest if there is a reasonable workable solution that could also benefit future installs.
thanks, apologies as i'm sure this is a very newbie question.