Low frame rates can be caused by many things such as outdated graphics drivers, settings not optimized, old graphics card, or a combination of these things. So we'll go down a checklist of ways to fix whatever is causing you to lag. Note numbers 1 and 2 should make the most impact toward improving your FPS.
To see your FPS in-game, press F11. You'll see it in the bottom left hand corner.
1. Make sure the graphics settings are turned down in the launcher. - Turn Anti-Aliasing to 'Disabled' and keep Vsync off.
- Turn down the resolution if absolutely necessary.
2. Changing the quality settings in-game. - F12 changes the the clip/view distance. Setting your clip to 64 meters should yield a big FPS gain.
- F8 turns off high quality shading, bump mapping, and normal mapping.
- In the chat bar type: '/trees low' and '/flora low'.
- F9 turns off post-processing effects.
3. Update your graphics card driver(s). - Go to your card vendors website and make sure your driver is the very latest.
4. (Intel laptop specific) Make sure you are using the dedicated graphics card if your laptop has both integrated and dedicated graphics available.
5. Update Java. It is possible that your version of Java has some nasty memory leak that is causing Mythruna to gobble up all of your systems memory.
6. (64 bit computers) make sure you are using the 64 bit java version.The 32 bit java runtime can cause a decrease in performance and other graphical bugs. If you have a 32 bit computer stick to the 32 bit java runtime version.
- Download it here:
http://download.cnet.com/Java-Runtime-Environment-JRE-64-Bit/3000-2378_4-75317067.html7. Run a 3rd party application called Gamebooster. (Use at your own risk)
This should help squeeze out some FPS by turning off unnecessary background processes.
- Download it here:
http://www.iobit.com/gamebooster.php8. (Linux) Sadly you have to use the proprietary drivers to get adequate frame rates. Keep in mind that in doing so, you cause RMS to gain another pound.
Hopefully this helps somebody; If you are still having frame rate issues, feel free to post about it below or make a new topic regarding your problem.