Massive drop fps with foliage

So, i used the Europian Forest from marketplace. It was pretty good stuff. I created a forest similar to the demo level that has but in a smaller landscape. At first it was good but after i lowered the lightmaps from the grass the fps dropped to 15. I don’t know why. Even the build takes a lot. The grass i did it wth the grass tool cause i saw that it has better performance like that than the foliage, and with the foliage i did the trees which in total is 2003 instances. I don’t why suddendly it dropped like that when i just lowered the resolution for better performance and in the end i got worse performance. Any help?

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See if you accidentally turned on Raytracing at some point :slight_smile: