Issues with 64 bit version of PS CS6 and now CC hanging, also sniffer_gpu.exe

Question

I cannot use the 64 bit version of Photoshop for awhile now. I had hoped that with CC coming out that would fix the problem, but it hasn't. I am able to use the 32 bit version, so after putting some time in with Adobe tech support to no avail after some hours, I'd just used that, but with the problem continuing in the latest edition I figured I should deal with it.
I am running Windows 7 pro, an intel core i7 950 processor, and an AMD (ATI) Radeon HD 5700 video card.
Both 64 bit versions of Photoshop hang for me before I can open any file. Looking in the resource monitor, at the wait chain, it states, 'one or more threads of Photoshop.exe are waiting to finish network I/O.'. The only way I can close the app then is by manually killing it in task manager or resource monitor.
One thing I've noticed that may or may not be related, sniffer_gpu.exe only appears in the resource monitor while running a 64 bit version of Photoshop, both CS6 and CC. Once it appears, it seems to continually use 12% of my cpu, and even after I kill Photoshop, it continues to run and use 12% of my cpu, until I kill it as well. This does not happen at all when I run the 32 bit versions, I do not even see sniffer_gpu.exe appear.
Anyone have a clue what the problem might be?

Answer 1

Way back when, I did indeed uninstall and reinstall my Catalyst drivers, still no luck, still same problem.
Finally today, some 6 months later, I was again dealing with Photoshop Phone tech support for another hour or two, including much hold time, finally having the issue excalated, as all software and drivers seemed up to date, and yet all versions of the gpu sniffer program still could not identify my gpu.
After I got off the phone with them, I went to the AMD site and followed instructions on how to uninstall and reinstall their software. One step I had not thought of or tried was, after uninstalling the Catalyst software, repairing the .Net 4.5.1 framework through the Microsoft site before reinstalling the Catalyst software. It somehow seems that though the Catalyst installer software supposedly installs the .Net 4.5 framework, it cannot, unless the framework is already installed...
Anyway, this does seem to have finally gotten the 64bit Version of Photoshop to finally work on my desktop.