XD
I have change some graphic settings it may goes normal now on weaker pc but no promises
It improved, now it doesn't give the OpenGL error, and the fps has improved a little, around 10 to 15fps. One of the crashing problems is that I'm not able to run the game in windowed mode. GPU is running directly in full screen at 1080p.
There's a program to watch FPS on Linux as well as MSIAfterburner on Windows, I'll see if I install it.
But I urgently need to buy a better GPU lol. The one I'm using isn't even an integrated GPU on CPU, it's integrated into the motherboard, G41 Express Chipset.
I changed the screen resolution and the game ran smooth with 50 - 60 fps