Minecraft Forums

I'm on my recently built gaming rig and I've had no issues until now. My GPU is an Nvidia GTX 650 Ti but sometimes I'll be playing minecraft and I'll suddenly drop to 0 fps and I'll have to restart my PC to fix it. Also I get a steady 60fps in 1.7.2 but in 1.5.2 I get 100-300 fps please help if you have any suggestions.

-MaliciousBanana

That's because the incredible optimization that the Mojang Team has made... The 1.7 update had so much changes in the previous written code, that... well... you know, makes lose a "little bit" of performance.

As for getting a constant 60 FPS, that is because Vsync was enabled; it locks the game's frame rate to your monitor's refresh rate; there is no point in having 100-300 FPS if your monitor can't display it and it can even worsen image quality (screen tearing, you basically see two frames at once). There is no need to disable it as long as it remains at 60 FPS aside from lag spikes (it won't help there); do note that if you computer can't reach 60 FPS it will bring FPS down to a submultiple of the refresh rate; e.g. 30 FPS if it otherwise reaches 55 FPS, so in that case disabling it can help.

Also, I have found 1.7 to be much more demanding in chunk generation; I've even outflown chunk generation in Creative (that is, there is nothing at all under you and no light on your character either and if you try to drop down you slowly fall and jitter, unrelated to the bug where chunks don't render properly).

That said, Optifine can help, with options to stabilize FPS, which is a big problem because of how the game was coded (multithreading? Nope, unless you count the server and client threads in singleplayer, plus a few minor threads; this also means that a fancy 12-core PC won't do much better than a dual-core PC).

Mentioning your GPU, I would suggest disabling Vertical Sync due to the extra strain it can put on a computer's GPU and due to the mouse lag it can cause on lower-tier GPUs. Since you have an Nvidia card, I would highly suggest taking advantage of the optimzation techniques and features in the Nvidia Control Panel, and use the OptiFine mod by Sp614x, which could help stabilize your framerate, and allow you to lock your framerate at 60 without enabling Vertical Sync to minimize the strain on your GPU and also minimizing the amount of CPU and Memory usage Minecraft uses up by limiting the amount of frames it has to run and maintain per second. I must warn you that 1.7 is much more CPU-Intensive due to the addition of biome variety and blocks, so take your CPU into consideration and be mindful of how much strain is being put onto it from Minecraft's rendering and generating of a world's chunks. Minimizing the amount of chunks loaded at one time and taking advantage of using Multiple cores in your CPU using the OptiFine mod can relieve strain from your CPU and potentially remove the lag spikes. Good luck!

Thanks for the help! Now I can get around 150 fps in 1.7 on max settings. I'm not sure about the random lag spikes yet, but I'll see how that goes. Thanks for all the help again!

-MaliciousBanana