I am transferring data (photos and videos) from my Android phone to my Microsoft Windows computer. Each file is between 2 MB and ~30MB. I see large disk space variations: in my case, when I look at the remaining space it oscillates between 1.43GB and 1.95 GB, seemingly 1 oscillation for each file transfer. Why are these such large oscillations?
I use Windows 7 SP1 x64 Ultimate my computer and Android 6 on my phone (LG 4).