After updating to minecraft 1.8 I have been experiencing extreme lag near trees. This is especially prominent in Cold Taiga biomes with the frame rate dropping so low that I barely move. There was no problem with this in 1.7.10.

What I expected to happen was...:
Normal framerate in all biomes.

What actually happened was...:
Game/framerate lags so much in Cold Taiga biomes that I can barely move, making them effectively inaccessible to me. Less severe lag also happens in Roofed Forest and regular Forest biomes.

The lag is much less when I am in my underground house in a Cold Taiga biome but is absolutely terrible as soon as I reach the surface. Possibly something to do with the new tree textures causing lag?

Steps to Reproduce:
1. Enter a cold taiga/roofed forest/forest