The Godot Engine uses Vulkan and this engine offers poor performance with transparency. On the other hand, these performances can be increased by recreating all the textures and adjusting them with the LOD.

I went from an FPS of 40 to 100 and above.

-> Tree and vegetation recreate.

-> barbed wire corrected. The textures of the graffiti were applied, because they also used transparency.

The Statisfactory game also uses the Vulkan engine and sometimes encounters this kind of problem.

Good day!