In general, a have a massive FPS drop from 1.4.7. If I stay idle for a bit with smooth lighting on minimal, the game will run decently at 30-50, but if I start to look around fast with only sensitivity at 100%, my fps decreases to 15-25. It seems turning smooth lighting all the way off will increase performance to what it was on 1.4.7
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Fix it.
Duplicate of MC-8824, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.