Because of the my previous post. Learning that turning on Global Draw Kill increases performance, I ran 8 test runs on differing exFAT allocation unit sizes. If you format an SD card, low level format in Windows 10...that is you turn off "quick format", the SD card will heat up and you can burn up the card, so don't do that... I realized that just after I started a low level format...
The parameters I used were: Aug 11th build (the one with the CMD1, CMD2....presets), 160 overclock and 192 overclock, 12 bit depth, CMD1 (1080p, max RAW), sound recording OFF, Global Draw Kill ON, 29.*** FPS. I used the 170/MBs Extreme Pro SD card, 128gig.
Last, the numbers I am relaying are from me watching the Green Camera..the numbers do go up and down a bit, so they are approximate, my main goal was to identify the best numbers after the camera was running for a while, because when the camera first starts the numbers are fluctuating, ... These are not Benchmark run tests, because I haven't looked into that subject matter yet..
AUS 2048
160 overclock..... 44.3-44.4 4 % Idle
192 overclock 44.6-44.8 3-4 % Idle
AUS 4096
160 overclock..... 45.6-45.8 6-7 % Idle
192 overclock 45.4-45.5 6-7 % Idle
AUS 8196
160 overclock.... 45.3 6 % Idle
192 overclock 45.4-45.7 6 % Idle
AUS 16384
160 overclock......45.7-45.8 6 % Idle
192 overclcok 45.6-45.7 6 % Idle
So, I am going with 4096 allocation units on the SD card. A 6-7% Idle, in my opinion, points to the best throughput.