Minecraft flickers when moving around

Solution 1:

This is probably a performance issue.

First of all, try different video settings. Such as turning Fancy to Fast if it's on, no smooth lighting and render distance to minimal chunks. Just try scrolling through them and see what the effect is on your performance.

If that does not help, check your ram allocation using F3, and look in the upper-right corner of the screen. If that gets above around 70-80 %, (depending on preference) add more ram to Minecraft. (Remember you need to make sure other programs can still run without Minecraft consuming all the ram so that might be a problem)

You can do this in the profile editor under Java settings (advanced). In JVM Arguments you will see that you can input how much ram you want Minecraft to be running on. In this box you fill in:

"-Xmx2048M -Xms2048M" for 2GB ram

"-Xmx4096M -Xms4096M" for 4GB ram

To add more, add 1024 to the numbers for an extra gigabyte.

eg, 4096 (4GB) + 1024 = 5120 (5GB)

If that does not help, try deleting your .minecraft folder in it's respective location.

Mac: /Library/minecraft
Windows: Press Windows+R, type "%appdata%/.minecraft" and press enter.

But make sure you back the folder up!

Many people have used this technique for similar problems without: eg. Internet connection, so the launcher could not re-download the folder. This is also the folder were world saves and texture-packs are stored so again, back it up first.

if that does not help you need to wait for new vidcard drivers that might solve the problem.

Solution 2:

If you are using a NVIDIA graphic card, this may be caused by threaded optimization. To disable it, open the nvidia control panel (in the windows control panel), get in the 3D settings and set the threaded optimization parameter to disabled.

Solution 3:

It has happened to me before. To fix it I reset my render distance to the lowest and played for a bit. Then I turned it back up. Try pressing F3+A to reload all your chunks if all else fails.

Solution 4:

I had the same problem, but on Multiplayer with Optifine - I was even going to ask a question until I figured out that if the Render Distance is 10 or over, some areas of the world glitch: Which I fixed by changing the Render Distance to 9: Hope this helps, Zoweb