I was building a redstone contraption for my map that I'm working on and when I interacted with a button it would pulse very quickly that it couldn't see the redstone wire turn on.
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Did you set randomTickSpeed to zero ? If so, duplicate of MC-54216
I don't have this problem, what contraption do you use? Do you manipulate the button with commandblocks or is your contraption so big that you're experiencing heavy lag spikes each time you hit the button?
And also how much MB has Minecraft allocated?