I know it is a different use case scenario but when working with FCPX you are strongly advised to have all your events and project files on a drive separate to your system drive because when FCPX is trying to reference these files, and they are on the system drive, it make the internal CPU work harder. So with them, and there render files on a separate drive the whole system works more efficiently.
I was thinking the same for AE if the cache folder was on a separate drive, say a TB drive, the cache would be separate to the system so leaving the system to try and work more efficient. I’m obviously not fully understanding how the whole AE system works but after hearing someone mention they bought a cheap SSD drive solely for use with the AER cache I thought I would ask.
I hope AE works on something similar to Cineware Proxy, unfortunately I’m only on C4D r12 so can’t take advantage of that yet but I think AE needs that built in sometime in the future?