Slow File Copy from Local MacBookPro HD to Synology 270+ NAS Station

Hi,
I have been reading through a similar problem from BO, but his problem was making copies between 2 external drives.
My problem, is using Finder, copying 90Gbs from the local iTunesMusic folder, to a Music folder on the NAS, by draging 'drop. It's not a slow copy, it's... endless. I was not able also to cancel the copy by clicking the "x" on the window.
I have tried to use iTunes with the Library\Import option, it was fast at beginning, but then it gets very slow. There were around 15000 files to copy, and during 2 full days, it has copied around 7000.
I have canceled everything, shutdown and reboot, and tried to copy them through Finder by d'drop, also very slow.
It really looks that when a directory/folder has too many subfolders, Finder has to run through all the FAT, every time, and then try to make the copy.
Please help, I am a 1 year hold Mac user, I have heard that Mac didn't manage very well with "tons of files", but this is hard to accept.
Regards,
Gi

Ok, I think I've figured out the solution, to a large extent.
Apparently there is an attribute for SMB protocol that controls send buffer size and receive buffer size, on the server. On FreeNAS that is set to 16384 as default for both. I've upped it by 10x to 163840 for both, and looks like that solved the speed issue for "downloading" from NAS. Now my speed over WiFi for NAS to MBP transfer is peaking at 130mbps, and around 100mbps for "upload".
But one thing it did not solve is the consistency of the speed, while "upload" to NAS stayed rather consistent (around 80-100), the "download" transfer jumps A LOT, I'm talking a range of 500 kbps to 130 mbps, and everywhere in between. Seems to be completely random, it will sustain ~100 for some time, but at times will drop to 500 kbps, jump around for some time and then go back up to peak. Just plain random.
But at least I can now transfer 200MB file in about 15 seconds or so, on average, over WiFi.
Hoping the SMB consistency will be improved in the next OS release, but then again, I heard people were hoping for that for the past year or so. We'll see.

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