Put the summary of the bug you're having here

What I expected to happen was...:
The game to run smoothly with a high FPS rate as in previous versions of Minecraft, as my computer has better than recommended specs and I have even played on worse computers in the past.

What actually happened was...:
At first the game ran as usual. But after less than a couple of minutes, my FPS plunged dramatically to less than 10. I decided to check my video settings which hadn't been changed, and although I run a 64 bit version of windows which would usually allow the game will usually run smoothly on far render distance, I decided to turn my render distance down to normal. This solved the problem for a minute and the game ran smoothly for a short time, but the FPS soon dropped again resulting in horrible lag. This happened consistently with every render distance, even when set to far again. Other people with Intel GPU's have also experienced this issue as I have found on Google.

Steps to Reproduce:
1. Find a computer with Intel Integrated GPU.
2. Download the latest version of Minecraft.
3. Play for a few minutes.
4. BOOM! Lag!