Since the first version of performance dropped, I turned on the 1.7 has 400-500FPS, in 1.8 can not exceed 50fps
We have to explain to me why a game like Minecraft is not running properly on my PC while I play Watch_Dogs Ultra (1080p) ...
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+1, also experiencing a performance regression from 14w33/34 to 1.8-pre2. Previously, no troubles running at a constant 60fps w/ vsync-60 set. Now, unless I'm looking straight up or straight down, it is difficult to stay above 20-30 fps without considerable lag.
Client: W8.1, Java 1.8.0_11 32bit, Q6600, 4G RAM, 660 Ti.
Server: Debian Wheezy, i3-4130, 16G RAM, Java 1.7.0_65 64bit.

This is likely a duplicate of MC-68080.