Anyone who has played online has already experienced the block break lag. When you have slow connection, or when the server's CPU is overwhelmed, the blocks you destroy will first reappear, then later on they pop out. Sometimes, they don't actually pop out and you have to destroy them again. In multiplayer, the same thing applies to placing the blocks.
The thing is, that I experience this in single player game. It occurs randomly and as of now, I found no correlation with anything else (specific chunks, amount of mobs or entities…). Also, other things work perfectly and instantly:
- no inventory lag
- no item pickup lag
- no monster desync lag (monsters are really where I see them)
I noticed one thing that is related though:
- along with this issue, horse-riding is as slow as walking
So far, I have tried the following without results:
- restarting the game
- Changing version of JRE (java)
- reducing video settings. The problem doesn't reduce even if I set 2 chunk render distance
I made a youtube video which can be seen here:
Best Answer
You can experience this in singleplayer because in singleplayer you are playing on the server too. When you open the game to LAN, other players can join that server. Internal servers added on Minecraft 1.3
You can try moving Minecraft directory to a faster HDD/SSD, upgrading your CPU.