The most common cause of low FPS in League of Legends is high in-game video settings. To lower your video settings:
- Start a practice game of League of Legends
- After entering the game, open the League of Legends Options menu at the bottom of the screen, or simply press Esc
- Select the Video menu
- In the Video option menu, under Settings, set to Custom
- You can change the video settings for: Character Quality, Enviroment Quality, Effects Quality, and Shadows. The lower the settings you choose, the more your FPS should increase. The settings that affect FPS most noticeably are Shadows and Environment Quality.
Another common solution to low FPS problems is to update your video card drivers
Framerate Normalization Settings
In the video options menu, the setting labeled "Frame Rate Cap" can be used to prevent unexpected dips in framerate by attempting to smooth out the game's performance. By default, the option is set to ?Benchmark? which means that all framerate smoothing is disabled. Other settings have the following behavior:
FPS Drop in Windowed Mode
- Stable ? This attempts to detect and maintain a stable framerate above 25fps. Players may experience a slightly lower maximum framerate, but fluctuations should be less.
- High ? This option also detects the low and high framerates and attempts to normalize the performance, but at a higher FPS than the ?Stable? option.
- 25/30/60/80 ? These options allow the player to control the target framerate the smoothing process will attempt to achieve.
In the Video Option menu in game, there is an option to run the game in Windowed mode. Windowed mode often results in a significant drop in FPS. If you are running the game in Windowed mode, and experiencing poor FPS, it is recommended that you disable Windowed mode. Additionally, if you're using dual monitors, running Windowed mode on the secondary monitor may result in a noticeable drop in FPS. Try to keep the League of Legends window on the primary monitor.
Common programs that can lower League of Legends performance
There are a number of programs that can cause poor frame rate or latency if left open while running League of Legends. Closing these programs may improve your game's performance. These programs include:
- Anti-virus scanners
- Webpage browsers
- Streaming audio and video
Some common examples of these programs: McAfee Anti-Virus scanner, Mozilla Firefox web browser, and Pandora streaming audio.