GPU Utilisation problem

[Quantum-192]

Hi all. Last night the top 980ti in my SLI set up failed and today I have stripped it out and gone back to a single card.

Trouble is MSI Afterburner and EVGA Precison X all show its utilisation as 30-45% and my frame rate has tanked (playing Witcher 3 at the moment)

I am playing at 1440p and my frame rate has gone from 80fps in SLI to 35fps on a single card.

Is it right for my GPU utisation to be at 30-45%? I expected it to be at 99%?

 

[Quantum-192]

Re-installed the drivers and it's now up to 99% utilisation and delivering much better cps but the card is coil whining really bad.

Last night it was the card in the top slot that failed so I removed it and moved the bottom card up to slot 1 and this is the one I am having issues with.mso yes it has changed slot.

Don't remember the card whining this loudly before. I have even taken off the overclock so it's running stock and it's still doing it

 

[Quantum-192]

I am using a Dell 144Hz G-Sync monitor and it does seem worse when in menu's.

Not using V-Sync because of the Dell's G-Sync ability but I can use the in game menu option to lock FPS to 60 would that be the best way to go as currently I think it is set to Unlimited Frame Rate in the menu?