Performance is pretty good for me, but I have noticed an occasional skipped few frames as I approach planets. It's almost like there is some pre-emptive loading/calculating going on so that the transition is smoother when it eventually streams in. It's a compromise I prefer to pre-2.2 but perhaps this is where some of the issues you see are coming from.
As for remedies, I'm not too sure - I know that shaders are cached on both AMD and nVidia cards these days, but the behaviour is highly driver dependant. On AMD you can force shaders to cache by creating a game profile. Nvidia seem to attempt it regardless of whether there's a game profile or not, though if your drivers aren't detecting Elite then they may not be able to cache the shaders correctly. I believe the shaders are cached to the hard drive, so anything you can do to improve the read speed of the hard drive where they are located might also help (making sure drivers are installed on your fastest HDD/SSD/turning on super-fetch etc.), though I guess they are loaded into memory when you launch the game?
As for remedies, I'm not too sure - I know that shaders are cached on both AMD and nVidia cards these days, but the behaviour is highly driver dependant. On AMD you can force shaders to cache by creating a game profile. Nvidia seem to attempt it regardless of whether there's a game profile or not, though if your drivers aren't detecting Elite then they may not be able to cache the shaders correctly. I believe the shaders are cached to the hard drive, so anything you can do to improve the read speed of the hard drive where they are located might also help (making sure drivers are installed on your fastest HDD/SSD/turning on super-fetch etc.), though I guess they are loaded into memory when you launch the game?