MKLINK problems

Setup:

Windows 10 64

physical drives in pool:

1 WD HDD 6TB (M:) (2TB used) 

1 WD HDD 6TB (U:) (1TB used)

So, before i started using DP, I had no problems creating SYMLINKS and HARDLINKS to serve up to several clients on my LAN from the Windows 10 machine's pool. 

However, I noticed after creating the pool, both SMYLINK /J works, but the directories on the clients disappear and reappear with no visible pattern.  

If I use /H (switch for HARDLINK), then I get "The request is not supported."

Now, if I create the symlink (/H or /J) to/from  the physical drive to the hidden folder "poolPart" and run the same command, same file, everything works.

Am I doing something wrong or is this a limitation in the software?

Thanks,