Hey guys i was messing around and came across the problem from where the lag is coming from, Its the new lwjgl the the 1.6.x release uses. I tried just replacing the old files with the nightly build from here:http://ci.newdawnsoftware.com/job/LWJGL-git-dist/ but the launcher kept over-writing the files due to a type of signature check:/ So here is what i did to bypass it.
1. Download lwjgl nightly (2.9.1)
2.download winrar or 7zip if you don't already have it.
3.Find .minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar and open it in winrar.
4. Open nightly build in winrar and find the jar folder.
5.Right click lwjgl.jar and select view files.
Should look like this afterwards:
6.Open the org folder then open the lwjgl folder:
Should look like this inside
7. hit Ctrl + a and then Ctrl + c
8. Now go back to the other open file from earlier(.minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar) and follow step 6 again.
9. Once inside that folder hit Ctrl + v. A windows should pop-up and should be defaulted to add and replace files. Select ok.
10. Follow steps 4-9 for the jar in folder .minecraft/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar
11. Run minecraft and the mouse lag should be gone:D
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1. Download lwjgl nightly (2.9.1)
2.download winrar or 7zip if you don't already have it.
3.Find .minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar and open it in winrar.
4. Open nightly build in winrar and find the jar folder.
5.Right click lwjgl.jar and select view files.
Should look like this afterwards:
6.Open the org folder then open the lwjgl folder:
Should look like this inside
7. hit Ctrl + a and then Ctrl + c
8. Now go back to the other open file from earlier(.minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar) and follow step 6 again.
9. Once inside that folder hit Ctrl + v. A windows should pop-up and should be defaulted to add and replace files. Select ok.
10. Follow steps 4-9 for the jar in folder .minecraft/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar
11. Run minecraft and the mouse lag should be gone:D