When surpassing chunk boundaries with leaves in sight, you will experience a FPS drop proportional to how many leaves are in sight and how low the render distance is. This is a problem when exploring any biome containing trees while having a low render distance, or exploring jungles without low render distance. It is worse when exploring a jungle with low render distance, but this issue is also not restricted to naturally generated leaves. The resulting FPS drop could be reduced or stopped by pressing F3+A to reload chunks. Turning off biome blend does not affect this issue.
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Although leave performance has been improved, this specific issue is not fixed and the FPS drop from reproducing this is still very high.
Relates to MC-186075
Can you still reproduce this in the latest version? I myself tried to in a single biome jungle world, but could not reproduce any noticable frame loss, and if I did, it was very slight and can be attributed to general world generation fps loss.
Are you able to add some steps to reproduce to the issue? Such as specific world generation settings to use, and any graphics settings required. Currently, I am unsure how to properly and fairly test it.
gaspoweredpick
My screenshot was taken when I surpassed a chunk boundary multiple times, which helps demonstrate the extreme FPS drop.
I discovered this issue when testing if MC-125007 was affected by performance, and it was not.