Lightroom 3.6 DNG and Noise Reduction Problem

Hello,
I did a search and couldn't find this issue listed. I convert my Nikon D90 raw files to DNG. Never seem to have a problem with that except that the display(s) seldom shows the results of applying Noise Reduction (Color or Luminance). If my display is at Fit or Fill I don't see the results of what I am doing. If I zoom in to 1:1 or more, then I can see the results. All works fine if I am using a jpg file, it is just the DNG files that do this. If I want to see the entire picture with Noise Reduction applied I have to switch to the Library Module. Then when I go back to the Develop module the main display goes back to not showing the Noise Reduction, but the secondary display is ok until I apply another effect then boom, back to Noise Reduction not displaying. All of the other changes I make work just fine. It is just the Noise Reduction that causes the problem. This is really a killer when I am working on photos. This problem existsed before 3.6. Does anyone else have this problem? FYI - When I switch to the Library Module it takes a few seconds before the secondary display shows the photo with the Noise Reduction applied.
I have a quad core 2.4ghz with 8gig of ram and Windows 7 Pro 64bit OS. Plenty of CPU and memory available.
Thanks,
Harold

LR is designed this way to improve speed. I think it varies, somewhat, with how high the ISO is where higher ISOs show NR more.
I find this annoying, too, and which there was a setting to allow LR to compute the NR at lower resolutions if one chooses, instead of Adobe choosing things for us.

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User-Agent: curl/7.12.2 (i386-pc-win32) libcurl/7.12.2 zlib/1.2.1
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< HTTP/1.1 404 Not Found
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< Server: Apache/2.0.52 (CentOS)
< Vary: Accept-Encoding
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100 311 100 311 0 0 2159 0 --:--:-- --:--:-- --:--:-- 0
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$

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Lightroom 3.6 DNG and Noise Reduction Problem

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