Ok, I used to get around 30fps rendering Alexa 2k to 1080p prores proxy. Then The next day, it renders at 13 fps, and now it is stuck at that slow speed.
I even did a clean install of Mountain Lion, and installed Resolve (Full Version) and it is still slow. I have no clue what happened. Even loaded the same project that got the 30fps speed with the same footage, and still the same result. I didn't install anything, between when it was fast and when it became slow.
When it used to render fast, I noticed that it had almost 100% processor usage. Now it uses only about 30% cpu usage when rendering. The source drive is a Seagate 2tb backup plus drive, and Ive tried it with Thunderbolt and USB 3, with no difference. Although I was only using Thunderbolt when it was rendering fast. Didn't matter which Thunderbolt port I used either.
Has anyone else experienced this? I don't think my macbook is defective, as everything else seems to work fine, and my geekbench is still on par with other Macbook Pro Retina's.