[SMB browsing extremely slow, have tried caching and RSS tuning...]

+1 Here.... SMB is ridiculously slow. And seems that Devs are just ignoring the issue. Seriously considering moving to another OS.

[Slow SMB Shares]

I'm also experiencing extremely low read and transfer rates when accessing samba shares with Ubuntu Linux. If I send files to the share over wifi from a laptop running Windows 10, I get transfer rates of around 50 MB/s (not amazing but good). If I boot the same machine into Ubunto Bionic and try to send the same files over the same network to the same share, I get transfer rates of about 3 MB/s that slowly raise towards 7 MB/s... That is unbearably slow!

I'd appreciate any advice.