i limit obsi to a single core on my pc making sure it doesnt take up to much resoruces.. it shouldnt need much.. thus.. i do this
this is how i do it-
open obsi and log in-
press control alt delete (or bring up ur task manager for w,e OS. u have)
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step 1.JPG
right click obsidian. and go to "go to proccess"
it should bring you to a process called client.....
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step 2.JPG
right click client and then go to set affinity... and it shows u how many processor cores u have.
you can always set a given program for as many cores as u want it to work on at a time...
when
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step 3.JPG
just uncheck a box/or 2 / or 3 as you see appropriate..
when im outta town or hunting I usually put it on both processors.. not that it effects my crashing or anything.. just to be safe