Anyone running After Effects on their hackintosh and getting choppy ram preview?

Just built a new hack, i9-9900k with RX580 and 64gb ram. Getting choppy ram preview playback in after effects. Even with 25% frame size and 1/3 resolution. Anyone else had an issue like this? I've got iGPU enabled, wondering if that could have anything to do with it? Working on a project at the moment but will try after disabling, if thats not it i'm out of ideas.