Wondering if my Cheesegrater continue to work well with 4K footage

[Nomad]

Does BMRAW breath more life into my cheesegrater... inquiring minds at work.

I'm quite sure of that when looking at the CPU and GPU usage while playing BRAW clips. It's not only about that, but also sheer data throughput as compared to DNG. That is a critical limitation on those older machines.
Why don't you try and keep the activity monitors open? The testifies are on the BM site.

[Marshall Harrington]

FYI the chessegrater is working fine. At least so far. I'm pleasantly surprised.