Without knowing additional facts, the problem may not be the drives, as your subject suggests. So what sort of facts are good to share with the group? Find 'em here:
After Effects CC 18.104.22.1684
Windows 7 Ultimate 64-bit Service Pack 1
No Thirdparty Hardware
Issue occurs with single video layer 3m 04sec, Used Keylight 1.2 to Take out the green screen, Footage is H.264 in a .mov container with an alpha layer
No error messages (Just Slow)
This issue occured while rendering footage from AE in AMC
It worked fine before, nothing changed on my system
I have quicktime installed Version 7.7.4
No other software was running before issue started only AMC
No third party effects or codecs installed
I have no idea what OpenGL even is.
This only occurs when rendering.
I am using multiprocessing, I have 6 cores dedicated to adobe products and 2 cores for background applications
In AE: File > Export > Add to Adobe Media Encoder Queue
Using H264 footage in AE is not ideal. If you convert your source file to a true intermediate codec (like uncompressed, ProRes, Animation or PNG Quicktime, for example) before importing to AE, how do your results change?
If you render directly in the AE Render Queue, rather than in AME, do your results change?