Horrible. Even slower than Dopus. Even if I set the buffer to something like 10240 k for different disks. Total Commander is as fast as the Windows Explorer (both directions) if I simply use the "Standard Copy method".
The most simple tests is copying a Windows 10 ISO file. It's totally consistent. I copy with Dopus TO the server and then FROM the server.
I have also tried this tip with the button to use nircmd.
This gives me full speed.
Reading this, I have now put in some ridiculous number in copy_buffer_size: 512 MB
And voila, I see much better speeds. But also strange fluctuations.
It's a Windows Server 2016 at the end.
OK, from the speed perspective, I think I reached a better speed with that ridiculous buffer size of 512 MB. I still think it's a bug in Dopus that needs to be investigated and fixed once and for all.
If you can write me how to configure Process Monitor I can help hunt down the root cause.