I have been having a lag issue too and as far as I can work out it has something to do with lighting. When I turned on vobs I gained some FPS but when I turned off alternate blocks my FPS dropped even lower. Turning off smooth lighting and fancy grpahics did not help at all. Oh Also when I just randomly decided to turn my render distance up to 32 this happened. all these screenshots are taken by just rotating my mouse.
I have been having a lag issue too and as far as I can work out it has something to do with lighting. When I turned on vobs I gained some FPS but when I turned off alternate blocks my FPS dropped even lower. Turning off smooth lighting and fancy grpahics did not help at all. Oh Also when I just randomly decided to turn my render distance up to 32 this happened. all these screenshots are taken by just rotating my mouse.
Ok so I loaded an older map of mine and had the issue you had where none of the blocks are loading. I opened up the world in MC edit and it was perfectly fine. So I then turned all onf the graphics settings on and off. that did not work. I decided to put my game in full screen and then take it back out of full screen and then all the blocks loaded.
CPU: I3 4130
GPU: GTX 650Ti
RAM 8GB DDR3 1600
Os: Win 7 x64
Java: Latest Version
Nothing that screams high end, but for a cheap build it should easily handle Minecraft, a game with very little graphically heavy aspects.
Turning on VBOs fixes this.
Ah I see that does however it does not fix the lag
Fixed