Windows 2k12 r2 DNS Speed issue

We had 2 AD servers at our primary location. Running Win2k3 AD and DNS and one DHCP.

We decided to upgrade the AD and DNS servers to WIN2K12 r2. Everything was up and running well with 4 servers 2(old) and 2(new).

Then I altered the DHCP to use the DNS of the new servers running WIN2K12. When this happened the resolve time for clients increased on average to 4 to 5 seconds.

Thankfully I only demoted one of the older servers running Windows Server 2k3. I added the last remaining 2k3 server back into the DHCP and this sped up the clients but the problem of Windows 2k12 is still an issue that needs to be resolved.

I have been using DNS Benchmark from Steve Gibson to see the differences in time compared to my older server and servers online
 Final benchmark results, sorted by nameserver performance:
 (average cached name retrieval speed, fastest to slowest)

   10.  1.  1. 11 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
  ----------------+-------+-------+-------+-------+-------+
  + Cached Name   | 0.000 | 0.000 | 0.002 | 0.000 | 100.0 |
  + Uncached Name | 0.015 | 0.079 | 0.238 | 0.066 | 100.0 |
  + DotCom Lookup | 0.023 | 0.073 | 0.115 | 0.033 | 100.0 |
  ---<-------->---+-------+-------+-------+-------+-------+
                           DC4
                Local Network Nameserver


   10.  1.  1.  3 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
  ----------------+-------+-------+-------+-------+-------+
  + Cached Name   | 0.000 | 0.000 | 0.000 | 0.000 | 100.0 |
  + Uncached Name | 3.552 | 4.138 | 8.085 | 0.758 |  97.8 |
  + DotCom Lookup | 3.461 | 3.888 | 4.596 | 0.404 |  97.7 |
  ---<-------->---+-------+-------+-------+-------+-------+
                       WIN2K12-AD1
                Local Network Nameserver


    8.  8.  8.  8 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
  ----------------+-------+-------+-------+-------+-------+
  - Cached Name   | 0.004 | 0.004 | 0.006 | 0.000 | 100.0 |
  - Uncached Name | 0.030 | 0.072 | 0.340 | 0.059 | 100.0 |
  - DotCom Lookup | 0.040 | 0.079 | 0.153 | 0.042 | 100.0 |
  ---<-------->---+-------+-------+-------+-------+-------+
             google-public-dns-a.google.com
                 GOOGLE - Google Inc.,US


    8.  8.  4.  4 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
  ----------------+-------+-------+-------+-------+-------+
  - Cached Name   | 0.004 | 0.004 | 0.005 | 0.000 | 100.0 |
  - Uncached Name | 0.030 | 0.077 | 0.322 | 0.062 | 100.0 |
  - DotCom Lookup | 0.040 | 0.076 | 0.164 | 0.041 | 100.0 |
  ---<-------->---+-------+-------+-------+-------+-------+
             google-public-dns-b.google.com
                 GOOGLE - Google Inc.,US


   10.  1.  1.  5 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
  ----------------+-------+-------+-------+-------+-------+
  + Cached Name   | 0.000 | 0.006 | 0.254 | 0.039 | 100.0 |
  + Uncached Name | 3.474 | 4.332 | 8.175 | 1.316 |  97.7 |
  + DotCom Lookup | 3.470 | 4.043 | 4.660 | 0.448 |  97.6 |
  ---<-------->---+-------+-------+-------+-------+-------+
                       WIN2K12-AD2
                Local Network Nameserver

I did not post all the servers less than this. I think its pretty sad performance when google can out resolve your local DNS. Also WIN2k3 out preforms Win2k12.

There must be something in the config that is not right. This kind of slowness is not normal.

If anyone can help that would be great.

Thanks :)