Nevermind,

   Found this on the steam page

• Adjusted the frequency of Precursor anomalies 
• Balanced the Precursor anomalies rewards.

I didn't need to restart. 

I hope this is just random and that they didn't overnerf the occurrence of PC Artifacts as I had to explore more than half a large galaxy to find ONE ! Previously there'd be about 10-12 in a large galaxy. That was clearly too many unless the AI's could also be taught to go after them.

It will be quite a few turns til I know how good this arti is as most of my ships can't yet reach it.

I'm starting to agree that it may be too nerfed after this latest patch. On my first game after the "fixing patch" to nerf the precursor planets/anomalies, playing on a gigantic map and common anomalies I've only encountered 3 of the anomalies and they were so-so ones. I feel a bit spoiled after the initial release. Yes, there were too many anomalies but now I think the pendulum has swung too far in the opposite direction. Have to play another game with them set higher and see how I feel then. The initial game was on an insane map and there were an insanely large amount of them.

I don't mind the PC planets since most have food and pop penalties so you need early farm techs. There may be a few too many PC planets now.

The problem with making them all extreme is that is a late age tech. I play on large and with all 9 AI. (ie I take a stock AI, and the other 8 stock AI are in the game) so there's often not too many planets to grab so I'd not want to wait so long to colonize a PC world. Waiting for some is OK but not all.