Hi-- I am having the same issue and wonder if anyone has come across a solution? the processors seem to stop rendering for some reason and then start up again on. Same as bizkonzon, it only happens on larger renders, I'm using vray 2.0 and sketchup 2015 64x (so memory limit shouldn't be an issue?), I've exported final image to .exr and my laptop is about the same specs. attached screenshot shows how the processors stalling mid-render (but doesn't freeze or stall the rest of the machine) frustrating...
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