So I noticed that when the Spruce tree’s from the ‘PN Interactive Spruce Forest’ pack are loaded into a Procedural Foliage Volume and I move away from the ‘Full’ Trees the shadow visibly changes.
In the picture you’ll notice that the trees to the right of the highlighted one have different shadows then the one’s directly behind them. The trees in the foreground were placed in by hand and the ones directly behind them were placed using the Procedural Foliage Volume. If I move closer then those trees will have the same shadows as the ones placed manually. It shouldn’t be doing that though. It’s hard to tell in the picture, but the tops of those trees directly behind them are brightly lit where there should be shadows and it appears that way for every LOD except the first one.