Edit: see latest post for new information (posted on 11.06.2021)
Although the idea of including a forest background is a very interesting...
The impact on FPS counts is dramatic (at least on my system). Using build 10.15.21 my FPS ranges from 58 to 60. using 10.22.21 the FPS count drops to 36 using the same custom models. I hope there is an improvement in the works.
This is not a post asking for help or in any way meant to be negative in nature. Just a comment on current development, knowing Lee and his team will figure out the problem.
FPS count with out trees ( build 10.15.21)
FPS count with trees build (10.22.21)
Both screenshots from the same start location and same models.
Windows 10 creator,64 bit| Intel i7-7700 @3.60GHZ Quad|CPU PASSMARK 10,794|Memory 16GB |NVIDIA GEFORCE GTX 1060|GPU PASSMARK 9,569