Photoshop Latency Issues? when saving....1.5min to open 5.5 min to save same file.

Question

I am struggling to optimize my computer for Photoshop.
An example file opens in 85 seconds. Same file saves in 340 seconds.
PhotoShop CS6 (13.0.1)
File is 21000 x 21000 - 50 layers (5.8gb .psb saved)
Why so big? - 5k.com/C.jpg
When I open image, I see 2 swap files 67gb & 8.5gb
Hard drives
C: Samsung 830 256 ssd boot drive.
Raid0 SSD Samsung 840Pro 256x2 (512total) PSswap/temp (Tests @1100mb/s read @880mb/sec write)(Z77 intel RST v11.0+ raid0 trim)
Samsung 830 ssd media drive (open & save)
File opens in 90 seconds. Saves in 340 seconds.
stays at 0% saved for 270 secs
INTEL I7 3770K 3.5G 8M R8 - CPUs utilization - about 12%+- overall - no one cpu above 50%
ASUS SABERTOOTH Z77 lga 1155 MoBo
32gb MEM 8Gx4 GSKILL F3-1866C10Q-32GXL R
variables:
tried video card at (Adv, int, basic) no change.
Toyed with an NVIDIA QUADRO 6000 PCI-E 6GB - did not see performance change.
Tried opening&saving to raid0 SSD no change.
switched PSswap & media drives - slowed it down on open & close +- 100sec.
I don't understand why it would take so much longer to save than open....
Would a better video card (4gb or 6gb) make a difference?
Would 64gb ram (dif mobo) or 6 core i7-39*0K CPU make a difference?
Unrelated - When I pan to bottom-right of image there is a major lag in display. Up to 20 sec. regardless of video settings.
Is there an easy way to calculate video ram needs based on image size? Prefer ATI - was looking at trying v9800 4gb.
Tried NVIDIA QUADRO 6000 PCI-E 6GB - didn't seem better.
I recall reading that with SSD drives, having seperate drives for OS, TMP, Media is no longer adventageous....True/False?
I am grasping at straws to figure out what my bottlenecks are and how to elliminate them.
Thanks in advance for any suggestions/advice.
SysInfo
Adobe Photoshop Version: 13.0.1 (13.0.1 20120808.r.519 2012/08/08:21:00:00) x64
Operating System: Windows 7 64-bit
Version: 6.1 Service Pack 1
System architecture: Intel CPU Family:6, Model:10, Stepping:9 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, HyperThreading
Physical processor count: 4
Logical processor count: 8
Processor speed: 3510 MHz
Built-in memory: 32723 MB
Free memory: 5709 MB
Memory available to Photoshop: 29745 MB
Memory used by Photoshop: 84 %
Image tile size: 128K
Image cache levels: 4
OpenGL Drawing: Enabled.
OpenGL Drawing Mode: Basic
OpenGL Allow Normal Mode: True.
OpenGL Allow Advanced Mode: True.
OpenGL Allow Old GPUs: Not Detected.
Video Card Vendor: ATI Technologies Inc.
Video Card Renderer: ATI FirePro V8800 (FireGL)
Display: 2
Display Bounds:=  top: 0, left: 0, bottom: 1600, right: 2560
Display: 1
Display Bounds:=  top: 0, left: -2560, bottom: 1600, right: 0
Video Card Number: 1
Video Card: ATI FirePro V8800 (FireGL)
OpenCL Unavailable
Driver Version: 8.911.3.3000
Driver Date: 20120309000000.000000-000
Video Card Driver:
aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dl l,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Video Mode: 2560 x 1600 x 4294967296 colors
Video Card Caption: ATI FirePro V8800 (FireGL)
Video Card Memory: 2048 MB
Video Rect Texture Size: 16384
Serial number: 90148609589462100194
Application folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\
Temporary file path: C:\Users\Ivy1\AppData\Local\Temp\
Photoshop scratch has async I/O enabled
Scratch volume(s):
  E:\, 238.5G, 154.4G free
Required Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Required\
Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Plug-ins\
Additional Plug-ins folder: not set
(shortened)
Optional and third party plug-ins: NONE
Plug-ins that failed to load: NONE
Flash:
   Mini Bridge
   Kuler
Installed TWAIN devices: NONE
I am struggling to optimize my computer for Photoshop.
This example file opens in 85 seconds. Same file saves in 340 seconds.
PhotoShop CS6 (13.0.1)
File is 21000 x 21000 - 50 layers (5.8gb .psb saved)
Why so big? - 5k.com/C.jpg
When open image, I see 2 swap files 67gb & 8.5gb
Hard drives
c: Samsung 830 256 ssd boot drive.
Raid0 SSD Samsung 840Pro 256x2 (512total) PSswap/temp (Tests @1100mb/s read @880mb/sec write)(Z77 intel RST v11.0+ raid0 trim)
Samsung 830 ssd media drive (open & save)
File opens in 90 seconds. Saves in 340 seconds.
stays at 0% saved for 270 secs
INTEL I7 3770K 3.5G 8M R8 - CPUs utilization - about 12%+- overall - no one cpu above 50%
ASUS SABERTOOTH Z77 lga 1155 MoBo
MEM 8Gx4|GSKILL F3-1866C10Q-32GXL R
variables:
tried video card at (Adv, int, basic) no change.
Toyed with an NVIDIA QUADRO 6000 PCI-E 6GB - did not see performance change.
Tried opening&saving to raid0 SSD no change.
switched PSswap & media drives - slowed it down on open & close +- 100sec.
I don't understand why it would take so much longer to save than open....
Would a better video card (4gb or 6gb) make a difference?
Would 64gb ram (dif mobo) or 6 core i7-39*0K CPU make a difference?
When I pan to bottom-right of image there is a major lag in display. Up to 20 sec. regardless of video settings.
Is there an easy way to calculate video ram needs based on image size? Prefer ATI - was looking at trying v9800 4gb.
I recall reading that with SSD drives, having seperate drives for OS, TMP, Media is no longer adventageous....True/False?
I am grasping at straws to figure out what my bottlenecks are and how to elliminate them.
SysInfo
Adobe Photoshop Version: 13.0.1 (13.0.1 20120808.r.519 2012/08/08:21:00:00) x64
Operating System: Windows 7 64-bit
Version: 6.1 Service Pack 1
System architecture: Intel CPU Family:6, Model:10, Stepping:9 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, HyperThreading
Physical processor count: 4
Logical processor count: 8
Processor speed: 3510 MHz
Built-in memory: 32723 MB
Free memory: 5709 MB
Memory available to Photoshop: 29745 MB
Memory used by Photoshop: 84 %
Image tile size: 128K
Image cache levels: 4
OpenGL Drawing: Enabled.
OpenGL Drawing Mode: Basic
OpenGL Allow Normal Mode: True.
OpenGL Allow Advanced Mode: True.
OpenGL Allow Old GPUs: Not Detected.
Video Card Vendor: ATI Technologies Inc.
Video Card Renderer: ATI FirePro V8800 (FireGL)
Display: 2
Display Bounds:=  top: 0, left: 0, bottom: 1600, right: 2560
Display: 1
Display Bounds:=  top: 0, left: -2560, bottom: 1600, right: 0
Video Card Number: 1
Video Card: ATI FirePro V8800 (FireGL)
OpenCL Unavailable
Driver Version: 8.911.3.3000
Driver Date: 20120309000000.000000-000
Video Card Driver:
aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dl l,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Video Mode: 2560 x 1600 x 4294967296 colors
Video Card Caption: ATI FirePro V8800 (FireGL)
Video Card Memory: 2048 MB
Video Rect Texture Size: 16384
Serial number: 90148609589462100194
Application folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\
Temporary file path: C:\Users\Ivy1\AppData\Local\Temp\
Photoshop scratch has async I/O enabled
Scratch volume(s):
  E:\, 238.5G, 154.4G free
Required Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Required\
Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Plug-ins\
Additional Plug-ins folder: not set
(shortened)
Optional and third party plug-ins: NONE
Plug-ins that failed to load: NONE
Flash:
   Mini Bridge
   Kuler
Installed TWAIN devices: NONE
Message was edited by: PECourtejoie

Answer 1

That sounds like a pretty big document considering all the layers.  What's the nature of all those layers?  Pixel data edge to edge, or some vector data, some adjustment layers, a mix?  Do the layers have masks?
I was curious, so I timed the saving of a very large image I have on hand, with 32009 x 21000 pixels, 16 bits/channel, 42 layers, some pixels, some adjustment layers, most layers with masks.  I have "Maximize Compatibility" set to "Never" and I enabled Flate compression.  The save was to a high bandwidth SSD array, and like you I have Windows 7 x64.
The save went like this:
It started at 0%
Jumped to 25% at 8 seconds into the save.
26% at 0:35
27% at 1:30
28% at 3:15
etc. at long intervals.  The file psA3B2.tmp grew incrementally all during that time.
It seemed to stop at 73% for a few minutes.
The save completed in 22 minutes 10 seconds and the .psb file was ultimately 6.6 GB in size.
Since I have Background saving enabled in Photoshop CS6 I was able to interact with Photoshop and could potentially have been continuing editing during that time.  Also I had no problem doing other things, like type up this message, chat on Skype, etc.
I have 48GB of RAM and actual usage rose to 43.4 GB.  Photoshop created a 58GB scratch file.
It busied one logical processor (of 24) pretty much to the max the entire time (showing a total of 4% usage).  As I understand it data compression is not something easily multi-threaded (though I wonder whether it could be done by multiple threads on a layer by layer basis).  Your core speed is faster than mine with that i7-3770K processor (as compared to my Xeon X5690 CPUs), and who knows how different our documents are, but I'd say your system did rather well given that you have compression enabled.
The real workaround that could make it more usable for you is what Chris said above - for a document at this magnitude in size, disable the Flate compression and it will get right to the task of saving to disk.  And yes, it will make the file HUGE - so you trade size for speed.
As a test I disabled compression and saved again.  This time the save completed in 1 minute 29 seconds and the .psb file ended up being 36.5 GB in size.
-Noel