You can always give msi afterburners auto ocing feature a go and see if you can get performance back that way.
https://www.msi.com/blog/get-a-free-performance-boost-with-afterburner-oc-scanner
https://www.youtube.com/watch?v=vcMYUvqQrHM
Thanks, I did think about that, but at the end of the day all of the figures reported were normal (clock speeds and voltage), so figured I would leave it.
I'll try to get in contact with Palit today.
Thanks so much for your help.