Beta or no beta, the Speedtree trees are probably not suited to be rendered at such a vast distance as a flight game requires without a massive performance hit. I have a sneaky suspicion that it's the reason why the programmers have chosen to create "the box" autogen rendering as it only renders the closest environment and therefor increases performance. I'm not sure there is any way to solve the trees performance without either replacing Speedtree with something else (which would be a very costly and time consuming endeavor) or throwing massive amounts of powerful PC hardware at it. I guess the latter will be the case. I'm aware that it's a beta and luthier has said before that the trees are one of the main culprits when it comes to the performance problems of the game. The current box rendering is improving performance for most of us which is good but it looks horrendous.
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