Image transfer seems slow. Is that normal?

The rate of image transfer depends on:

1. Camera Model - GH4 or GX8

2. Camera firmware version

3. The operating system - Windows or Apple OS.

4. The number of files - 1 or 2. For example RAW + JPEG or just JPEG.

5. The size of the files. JPEG Small is fastest, RAW is slowest. Below is a table of typical image transfer times in seconds.

Camera	Firmware	OS	RAW	JPEG L	JPEG M	JPEG S
GH4	2.4	Win 10 b14393	4.30			Note 1
GH4	2.4	OS X 10.12.1	9.00	6.00	4.50	2.90 Note 2
GH4	2.5	Win 10 b14393	4.13	1.40	1.30	1.00 Note 3
GH4	2.5	OS X 10.12.1	5.00	4.00	3.80	2.40 Note 4
GH4	2.6	Win 10 v1073	5.12	1.72	1.3	1.10 Note 3

Note 1. Shutter release activated immediately
Note 2. Plus 6 to 8 seconds to reactivate shutter release
Note 3. Shutter release activated immediately
Note 4. Plus ~5 seconds to reactivate shutter release