The latest NVIDIA driver is not necessarily the best. Be cautious about updating it as soon as it is released.
A better approach is to download a driver and keep the .zip archive file after installation. If you update the driver and X-Plane behaves worse, you can always revert to the older (better) driver.
Look at the specific improvements NVIDIA announces – I have never seen X-Plane specifically mentioned in any of their gaming improvement lists – but that doesn’t mean the new driver might not improve X-Plane’s performance on your machine.