Am I the only one getting lag spikes and other types of lag or is it the update? I have 850 GB on my computer lol, and it's a Windows 7 Inspiron 570. It has a 64bit OS.
Minecraft 1.8.1 does use a ton of memory due to all the new features. Like what Redcat2401 stated, use Optifine mod, it really helps with the client side lag issue.
I really want to get this fixed.