I will try later an with 6168 re-encoded movie, to compare bitrate.
Germania
You don't need to. I tried with something else, and the outcome in size is exactly the same between 6.1.6.9 and 6.1.6.9Test.
I guess I was comparing the recent download where I explicitly chose H264 max. bit rate to the same movie I probably had choosen H265 and such came in lower bitrate and possibly because of this resulted in a much lower file size. Don't know if SF possibly takes the source bit rate for re-encode or what their settings are.
just tried this theory. Screenshot shows the output. 1st line I chose H265 max. bitrate, 2nd line I chose H264 max. bitrate as source

resulting bit rate just about 2000kbps when choosing H265. Both re-encoded files are H264