Open Esc > Settings > Video and run Auto Settings first. Compare Full Screen with your current display mode, then lower the All quality control or individual effects one change at a time. Pause downloads, close heavy background apps, update the graphics driver, verify Steam files, and check heat only if the same repeatable scene still stutters.
Use one area and camera movement where animation becomes choppy or the FPS value falls. If characters instead rubber-band, abilities register late, or the game disconnects, diagnose the network connection rather than the Video menu.
2
Pause downloads and background work
Pause Steam downloads, Windows updates, cloud synchronization, recording, and other heavy tasks you control. Close unneeded apps, then repeat the same scene once before changing Lost Ark settings.
3
Run Lost Ark's Auto Settings
Press Esc, open Settings, choose Video, and select Auto Settings. Let the game choose a starting configuration, apply it, and repeat the same scene. This is safer than copying a preset made for different hardware.
4
Compare display modes
In the Video menu, compare Full Screen with the current Windowed or Borderless mode. Change one mode, apply it, and retest. Keep the mode that gives steadier performance and still lets you switch apps in the way you need.
5
Lower the All control or one effect
If Auto Settings is not enough, lower the All quality control by one level. You can then adjust shadows, particles, anti-aliasing, or other visible options individually. Keep text and combat effects clear enough to follow.
6
Update the driver and reset custom GPU settings
Install current Windows and graphics-driver updates and restart the PC. Reset custom Lost Ark settings in the NVIDIA, AMD, or Intel control panel before testing again; a forced driver setting can conflict with the game.
7
Verify files and check heat
Verify the installation through Steam and repeat the same scene. If FPS worsens only after the PC warms up, check temperatures, fans, and blocked vents with the hardware maker's tools.
If the slowdown began immediately after a Lost Ark update and occurs in one activity, note the activity and time and check current Lost Ark notices before changing more Windows settings.
If Full Screen is smoother but switching apps is inconvenient, use it for demanding raids and return to Borderless for lighter play instead of changing several graphics settings each time.
If the display driver resets or other games also stutter, troubleshoot the driver or hardware rather than repeatedly reinstalling Lost Ark.
ⓘ Sources and verification
Checked against official documentation on . Scope: Lost Ark on Windows.
The written procedure uses current official support guidance and the game's visible settings. If a menu label moves after an update, use the linked official page and the option's description rather than an old screenshot.
