I have shot my BMPCC4 successfully with no dropped frames using:
Blackmagic Raw 3:1
4K 60fps
Samsung T5 1TB SSD
And using a good short USB C 3.1 Gen 2 cable, this cable. I think having the proper USB C cable makes a difference. I use this cable:
https://www.amazon.com/dp/B07PRLJKJP?re ... b_ap_shareFYI, Also worth noting, I always have an external inexpensive 12V power supply plugged in. I am using either one of these, and both work very well and support the below cable as well.:
https://www.amazon.com/dp/B00ME3ZH7C?re ... b_ap_sharehttps://www.amazon.com/dp/B00MHNQIR2?re ... b_ap_shareThe first one above has run for 2 hours straight and only used 1/3 the units charge. The smaller Amp unit above runs the camera, a powered lens, the T5 for a little over 2 hours.
The power cable that I use out of the box is compatible with the above power units and the BMPCC4K Weipu connector:
https://www.amazon.com/dp/B07LFN75KM?re ... b_ap_share