In the 1.8 snapshots, I am facing multiplayer lag-like problems where sometimes redstone would stop working, chunks would stop loading, blocks will stop updating, etc. I do not know what is the cause of this.
Comments 2
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.
After having this issue:
Please attach the complete output of the "Development console" which can be found on the second tab of the launcher.
If the launcher closes after game start, please edit your profile and select "Launcher visibility" then, "Keep the launcher open".
Could you check if your Java is the 64-bit version and if it is if its also the latest Java?
In the future could you always add your Java version/update under the environment field?