Yea. That's weird. You definitely shouldn't have been seeing it compile shaders again for loading up saves into areas you've already been. Driver-side cache should take care of it.Could likely be a bug. It's fast now, because I've prob been in-game for ~2 hours with the testing. When I was getting those constantly compiling messages I was exiting out after being in-game for 20 minutes or so, so who knows - maybe exiting with alt-F4 corrupted the cache somehow. Definitely not how Zero Dawn worked, you would only get longer loads with compiling if you were loading directly into an area for the first time after a new driver install, if you quit and reloaded that same area it would be as fast as expected, then the game would churn away at the shaders in background threads for the rest of the map while you played.
Don't get me wrong, I love the way Nixxes handles shader compilation.. as it provides as little initial friction as possible to the player.. but I still stand by my opinion that an option in the menu to fully compile all shaders upfront would be the best. Have the ability to do it upfront.. that way loading times could be potentially shorter, and less stress on the CPU during gameplay for those with lower end hardware.