RuneLite automatically enables hardware acceleration for Java 2D rendering. This can cause artifacting of the side panel, particularly on Windows, and can be fixed by doing one of the following:

Windows

Update the launcher

Launcher version 2.4.0+ blocks common applications which cause the artifacting issue, updating to it by redownloading RuneLite from https://runelite.net may fix the problem. If you still experience the issue after installing a launcher newer than 2.4.0, tell us in #support on https://runelite.net/discord and we will look into it further.

Removing external programs that interfere with RuneLite

Many GPU overlay programs cause this problem, usually removing them is the best option. The below programs are known to cause this problem:

• rivatuner
• sonic suite
• cFosSpeed
• alienware command center
• LogiOverlay
• NZXT CAM (must be closed and computer restarted)
• Wallpaper engine
• NVIDIA GeForce Experience
• Nahimic
• Sonic Studio
• MSI Afterburner
• Sonic radar 3
• GPU TWEAK III - ASUS

Disabling hardware acceleration

Method 1: Creating a shortcut

You can create desktop shortcut with --mode=OFF at the end of the target box. make sure there is a space before the --! (Video below)

Method 2: Starting the launcher with HW accel disabled from CMD

Run cmd.exe (Windows Key + R) and paste this into the command prompt:

"%localappdata%/runelite/jre/bin/java.exe" -jar "%localappdata%/runelite/runelite.jar" --mode=OFF

You can create a batch file to run this automatically when executed. Copy the text below, paste it into notepad, and save as a .bat file.

start "" "%localappdata%/runelite/jre/bin/java.exe" -jar "%localappdata%/runelite/runelite.jar" --mode=OFF
exit

Be sure to change "Save as type" to "All Files"

All platforms

If you downloaded the .jar version of the launcher, run this:

java -jar Location-of-RuneLite.jar --mode=OFF