Hi @Patryk_Walewski,
I have had to search for documentation on Foilage problems and it would seem Foilage is not supported in Early Access see a quote from the documentation
Does Lumen work with foliage?
Lumen Reflections should be extended to work with global illumination in lightmaps in the future, which will provide a way to further scale up render quality.
Foliage is not well supported in this Early Access build because of the
heavy reliance on downsampled rendering and temporal filters.
I found this quote by searching
Google first “unreal engine lumen foliage shadow depth”
then referring to the documentation page
Lumen Technical Details | Unreal Engine Documentation
I cannot say I understand this its too technical for me!
Ii have found FREE
interactive Open World Foliage in Props - UE Marketplace (unrealengine.com)
Project+Nature - UE Marketplace (unrealengine.com)
This is UE50EA Compatible and made by Epic MarketPlace
I have loaded the FREE EM
Dynamic Grass System Lite in Blueprints - UE Marketplace (unrealengine.com)
For the people who don’t know you load this into any compatible project like 4.26. You then Windows file explorer copy the folder from the 4.26 project folder Content\DynamicGrassLite to BLANK C:\Users\Owner\Documents\Unreal Projects\EMDynamicGrassSystem\Content\DynamicGrassLite
Now open your UE5 EA2 look in your Content folder Select “Show FPS” in my case 70 to 90 fps. I have set t.maxFPS 1000 (infinite)
Now move a Textures → Foilage into the main screen. The FPS slows whilst the shaders build. When finished FPS is back to speed and its UE5 compatible
We can only hope they fully support it in the final release later in 2022