On My Minecraft I'm Lagging Alot More Since The Horse Update
What I expected to happen was...:
To Just Play It Like Normal Not That Much Lag...
What actually happened was...:
When I Tryed To Move Or Jump/Sprint It Kept Freezing Until I Let Go
Steps to Reproduce:
1. Try To Sprint
2. Go In The Same Direction For A Few Secounds
3. Try Jumping
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
First try to update your graphic drivers from the manufacturer site
Second set system high performance
1. Click Start | Control Panel.
2. Click System and Security | Power Options.
3. Expand Hide additional plans category, select High Performance.
4. Close the dialog.
Optimize Background services
Click Start | All Programs | Accessories | Run.
Type SERVICES.MSC in the Open box.
Press ENTER.
Disable services that you don’t require.
I have found a presentation tutorial that will resolve your problem You are only required to follow the steps mentioned in the tutorial
http://www.slideshare.net/CarmenPomes/minecraft-15-lag-fix
Hopefully it will help you