Well, if you have the compatible Graphics Processor on your system, then you can try using the GPU from the Lightroom Preferences
System Requirement Link: System requirements for Adobe Lightroom for Mac and Windows OS
Thanks. I seem to meet the requirements (my graphics card has 1GB dedicated memory). I can't tell if it's worth using or not, though. It seems like it speeds up certain aspects of the program, but not everything. Guess I will try it enabled for a while and see if I like it.
Sure, let us know if you face any issue.
Yep, I'm using it.
Mine's a 2gb card, and - despite not having a super-high resolution (4k/5k) monitor - I do see a small but observable performance improvement from using it.