Viewer Slow In Presence Of Photoshop

[Darius1968]

I've seen at least one other post here to the effect that IMatch's Viewer can be quite slow (>6 sec. to load an image), when Photoshop is run, at the same time.  And, I can be added to that list as well. 
I know, I'm not providing that many specifics (an old Intel Core 2 Duo, 2.6 Ghz., 8 GB RAM), and feel free to ask anything, in that regard.  For the moment, though, as I've already said, the IMatch Viewer is fine, until I launch Photoshop.  What is interesting (to me, at least), is that if I close Photoshop, the Viewer won't return to the status it had, before opening Photoshop.  The only way to once again, regain normal Viewer function is to close, and re-open my IMatch DB.  Is there any quicker and easier way around this? 
Thanks. 

[sinus]

Darius,

Sad, to hear that.
I can't say anything here, because I never use PS together with the viewer.
PS and IMatch, yes.

But my workflow just doesn't make it necessary, to do so.
I choose my files for PS with the viewer, give them a collection and edit them in PS, but before I close always the viewer.

Why? I know from the old times with computers, that it is good, using too many programs at the same time does slow down the computer.

I can nothing say here and hope, you get a tip here for your problem.

[Mario]

Photoshop is one of the very few non-cooperative applications out there.

When it starts it allocates the configured amount of memory in a way that makes it inaccessible for Windows. Usually Windows can freely distribute memory between running applications, even swap out data of applications currently inactive or in the background to disk to free memory for other applications. This does not work with Photoshop.

Photoshop also "hogs" the graphic card, filling the GPU memory with data. Again, this makes the graphic card very slow to work with in other applications.

Please understand that IMatch cannot do anything about this, most Adobe applications are designed to be run stand-alone and are not cooperative - except for other Adobe applications.

If running Ps and IMatch slows down your system, just run one one at a time. 8 GB RAM is considered low-level by Photoshop. And probably your graphic card is also older or has only 1 GB RAM. This combined with Photoshop will slow down your system.

Tip: You can see how much memory IMatch is using in the Task Manager. IMatch handles databases with several hundred thousand files with something between 512 MB and 1 GB RAM.
Photoshop usually allocates 50% of the installed RAM fix (4 GB in your case). And this RAM is lost for all other applications and Windows.

I have a 3 year old six core i7 machine with 32 GB RAM and a fairly modern graphic card with 4 GB RAM (200US$ range). Windows 10 64-bit.
I don't notice any ill effects of running Photoshop / Lr / IMatch together.

Probably you should just add another 8 GB RAM and swap your graphic card for a mid-range current model to solve this.

Or maybe reduce the memory settings in Photoshop. Or disable the use f the graphics processor (File > Preferences > Performance) and see how this works out.
I don't know which changes Adobe does to the graphics card on your system. This may also be a driver issue (do you use the latest driver for your card) and the latest Windows 10 version?