So, I've been using AE for years now and starting probably about a week ago my RAM preview started rendering really slowly, like 20 seconds for 5 seconds of footage. Nothing has changed since then, I have 14 GB of RAM allocated to AE alone and I have no other programs open besides Chrome. Even if I let it render, after a few seconds of playing the audio starts echoing like I have multiple of the same video being rendered at once but a millisecond off from each other. I should also note that the source file of the footage doesn't echo at all.
Does anyone know what could be causing this and how to fix it?