So, I stopped updating Precision-X around 6.07, because the next 2-3 versions would no longer show my framerate/frametime correctly on my G15 LCD. Now, in anticipation of my 1080Ti arriving, I decided to update to the latest.
 
It still shows 0 framerate and frametime. I checked and it shows 0 in the tray icon too. Any suggestions ?
 
EDIT: Nevermind, I just found the software forum, and an answer

EVGATech_MDecker

JPS2K5
So, I stopped updating Precision-X around 6.07, because the next 2-3 versions would no longer show my framerate/frametime correctly on my G15 LCD. Now, in anticipation of my 1080Ti arriving, I decided to update to the latest.
 
It still shows 0 framerate and frametime. I checked and it shows 0 in the tray icon too. Any suggestions ?
 
EDIT: Nevermind, I just found the software forum, and an answer

Sorry we were unable to answer this when you posted earlier. Care to share the answer post link so other users may find it aswell?

I think he is talking about this thread. The answer is in this post.
 
Short answer: You need to have the OSD toggled on for the framerate to show on the G15 LCD.

JPS2K5
Yes, it is. As far as I can tell this goes for all Logitech LCD keyboards.

It's not just the keyboards. Ive noticed the FPS counter in the Hardware Monitor doesn't spring into life unless the OSD is turned on either.