Hi Chris,

Photoshop can sometimes show unexpected hangs, slow performance and sudden crashes. In order for it to function properly it needs a lot of RAM and a clean operating system.
So, you can try the below fixes in order to make it run smoothly and keep your computer crash free.

Fix 1: Update the software
The first step is to update your operating system. Make sure you have the latest drivers for your programs and devices and make sure you’re running the latest version of Photoshop. Many problems can be fixed with this one step.

1. Start Photoshop 2015 and choose Help > Updates.
2. The Adobe Application Manager will launch. 
3. Select Adobe Photoshop CC 2015 and choose Update.

Fix 2: Set Preferences File in Photoshop
Go to Edit: Preferences: Performance. In the Memory Usage section, try setting the slider to 70% and test it. If you receive memory errors, reduce it.

The next step is to set the History and Cache. Photoshop comes with a default setting of 20 levels of History. Reducing this number will reduce the need for memory. The Cache Levels control screen redraw and histogram speed. If you work with large files with few layers, try increasing the Cache Levels.

If you work with smaller images with many layers, reduce the Cache Levels. This should improve Photoshop performance.

Fix 3: Try cleaning up your PC
If you’re getting close to the space limits your computer will begin to slow down and become sluggish. Delete as many files as possible.
If that’s not an option and you need those files on your hard drive, consider upgrading to a larger (and faster) hard drive.

You can also use PC Reviver to do this job for you.
PC Reviver is a multi-purpose utility that will diagnose errors on your PC, safely repair them, and provide other maintenance and optimization recommendations.
PC Reviver is the trusted and recommended way to restore optimum performance and stability to your PC.
PC Reviver includes advanced diagnostic tools that will perform a comprehensive and complete scan to find problems with your PC. PC Reviver will safely fix these problems and perform other optimizations to restore optimum performance and stability to your PC.

For more information you can visit the below link:
http://reviversoft.c...

Fix 4: Check the required plugins
For example, if you have plugins designed for the 32-bit version of Photoshop and you’re now running a 64-bit version. This can create conflicts and cause Photoshop to crash. Here’s a resource for those of you running Photoshop CS6: http://helpx.adobe.com/photoshop/kb/troubleshooting-plug-ins-photoshop-cs6.html

Fix 5: File size limitations
Even with all these improvements, there are only so many files you can load before Photoshop will begin to slow down. One way to prevent this from happening is to only work with the file sizes you need for your project. When you open the various files you need, go to Image: Image Size and reduce your file sizes.

I hope this helps in resolving this issue.

Regards,
Lokesh