When you stand between two blocks the footprint (slight trail when you walk)
appears, and the sound for the blocks you're standing on constantly make their sounds. I don't know if this is the cause of lag,but i'll put this in anyway.
MC-58755
Sound/Walking Glitch on Borders of Blocks
Resolved
Incomplete
0
(Unassigned)
Unconfirmed
Minecraft 1.7.9, Minecraft 14w21b, Minecraft 14w25a, Minecraft 1.7.10-pre4, Minecraft 14w25b
Retrieved
Footprint ? This is not active in vanilla Minecraft.
Please attach screenshots and Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report (
[minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) here.