Hi, thanks for the information and sorry if I repeat myself.
You mentioned you tested with lineageos and it was 100 and 500.
Can you start the obex daemon as I posted in the other thread, so that we have the similar log information as shown there. That would be great.
Also I think your finding here, confirm my findings in the other thread and we can conclude that the issue must be in Sailfish OS somewhere, but as I mentioned I observed similar rates from Android to the same PC. If I find time in the next couple of days, I will try to capture the full debug from all 3 phones with one and the same file transferred to one and the same PC.