Network speed

Hi, just wondering if someone has any thoughts why transfers over my home network are on the slow side.

I originally thought the network was slow as had a raspberry pi acting as a network share for a while. It's now been removed and writing / switch replaced but b it's not really improved the speed.

I've got 1gb Ports and cableing on my router and switch, 1 x mycloud 5tb, and dell wyse 5070 windows 10 system with a 256gb m2 drive running 24/7.

When using my laptop via wifi to move a files from wyse to mycloud it's about 28meg / samba share.

Yet when I moving find via my mobile using a samba client and again move from wyse to mycloud it's always around 8meg.

It almost seems the file gets transferred by samba to the phone / laptop first then sent to mycloud. Surely samba would get wyse and mycloud taking and transfer direct to each other?

Thanks