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Tests with USB 3.0 cable
The cable arrived this morning and the difference was immediately apparent.
While not recording, the frame rate was 22.5 FPS. With image capture under way, TIFF recording was at a maximum of 15 FPS and was variable, falling as low as 5 FPS.
Both SER and AVI stayed pretty much at 22.5 FPS and were quite steady. AVI had the advantage of using half the storage space. Regardless, the consumption of storage space was quite rapid.
As far as computer resources were concerned, CPU and memory were less than 50%. SSD "usage" was notably higher for SER but not actually saturated. It was less than 50% for SER and AVI. There seems to be no doubt that the USB cable was the bottle neck.
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