AD Login Issues after DC demoted

Here is my environment.  I had 1 2008 Domain Controller and 2 Server 2012 R2 DC's.  All of the roles are on DC1 (2012 R2 Server).  I just demoted the 2008  server and now login are taking forever, and users are having issues opening and saving documents to network drives.  I checked DNS and all "seems" well.  I run a repadmin /syncall and no errors are returned.

I saw errors in the event viewer regarding time... I then saw that the time server was the 2008 box.....  I configured the 2012 R2 box to get the time from an external source...  Now both of the DCs are syncing the time exactly the same....  I have also verified that the DHCP clients are poiinting to the correct DNS servers... both 2012 r2 boxes....

What am I missing.... please help!!
BSModlinAsked:
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Seth SimmonsSr. Systems AdministratorCommented:
what does netdom query fsmo show on the 2012 servers?
if the roles are between those servers then the 2008 server was not the time server since clients get their time from the server with the PDC emulator role
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BSModlinAuthor Commented:
All roles are on the 2012 R2 server DC1, as they should..... What else to check for the slow logins?
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Seth SimmonsSr. Systems AdministratorCommented:
are the 2012 servers global catalogs?
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BSModlinAuthor Commented:
Yes
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Walter PadrónCommented:
Have you raised the functional level of the domain?

Also, restart the KDC (Kerberos Key Distribution Center) service on both DC's

Best regards
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compdigit44Commented:
have you run a dcdiag /v /e >c:dcdiag.txt

Are saving files to the network the only thing that is slow? how about user logins from their workstations?

Was your old server running WINS?
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BSModlinAuthor Commented:
Found the issue... It was my EMC SAN/NAS.... Had old DNS info in it, and user home directories where contributing to slow logon times..... thank you all!!
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BSModlinAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for BSModlin's comment #a40488903
Assisted answer: 167 points for Seth Simmons's comment #a40481197
Assisted answer: 167 points for Walter Padrón's comment #a40481554
Assisted answer: 166 points for compdigit44's comment #a40487801

for the following reason:

Found my own solution
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Seth SimmonsSr. Systems AdministratorCommented:
select your own comment as the solution
nobody else gets points since not all details were provided and none of us would have known your NAS was a contributing factor
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