Unless you have one of the new high resolution monitors, the graphics processor is only going to show very minimal (if any) performance improvement. Although you would rather not disable the graphics processor in Lightroom, it is the solution. If you want to use Lightroom, do it. Your other alternative is to ensure that you have the latest driver for your graphics card. If that doesn't solve the problem then you need to consider installing a different card.
Hi JimHess, thanks for the info.
I have been trying to turn it off, but every time I do it just freezes. Ironic, eh?
This is the error message, if that helps:
Log Name: Application
Source: Application Hang
Date: 31/12/2015 7:49:07 PM
Event ID: 1002
Task Category: (101)
The program lightroom.exe version 126.96.36.199 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Action Center control panel.
Process ID: 173c
Start Time: 01d143a7736cd7c9
Termination Time: 47
Application Path: C:\Program Files\Adobe\Adobe Lightroom\lightroom.exe
Report Id: 526e3cc4-af9b-11e5-9c22-002522ad304a
<Provider Name="Application Hang" />
<TimeCreated SystemTime="2015-12-31T08:49:07.000000000Z" />
<Data>C:\Program Files\Adobe\Adobe Lightroom\lightroom.exe</Data>
If you have any clues for me as to how to get around this I would greatly appreciate it!
So I've found the solution - JimHess was right, that was what was causing the crashes. However I couldn't turn it off - as the app would just crash each time.
Here's where I found the solution for that: How to disable graphics processor outside Lightroom app without reseting all preferences.