First record whether Total War: Warhammer III crashes, freezes, shows a display fault, or restarts Windows. Confirm the current requirements, remove all mods and test the game without them, verify the files, update Windows and the graphics driver, and use the built-in benchmark to change one setting at a time. Delete the AppData folder only as a later step because doing so resets local settings.
Record whether the game closes to the launcher, freezes with a visible window, shows corrupted graphics, fails only in one campaign, or causes a Windows restart. Copy any message and note the time, launcher, and action that triggered it.
2
Compare the PC with current requirements
Open the current store page for the platform that owns the game and compare its Windows, processor, memory, graphics, and storage requirements with this PC. If the PC is below the current minimum, changing game settings may not be enough.
3
Remove all mods and test without them
Use the current Total War mod manager to disable or remove all mods, including related files that remain in the game folders, then launch an unmodified campaign or benchmark. SEGA says unsubscribing alone may leave files behind, so keep a list of what you removed.
In Steam, open Total War: Warhammer III Properties, choose Installed Files, and select Verify integrity of game files. On Epic, use that launcher's Verify control. Wait for repair to finish before restoring mods or changing graphics.
Install offered Windows updates and the current driver from the GPU or computer manufacturer's official website. Restart when requested, keep the graphics control panel at its default game profile, and test once before changing power or compatibility settings.
6
Run the built-in benchmark after each change
Run the built-in benchmark with the current preset and record the result. If a display or performance problem remains, change one graphics option and run the same benchmark again. This shows whether the problem comes from graphics settings rather than a campaign, save, or mod.
If the crash repeats without mods after verification and updates, report the exact failure point, platform, system specifications, driver source, affected campaign or benchmark, and results through the Total War: Warhammer III support section.
SEGA lists removing the game's AppData folder as a later step, but that resets local settings. Back up or record important settings and use it only when testing without mods and verifying the files did not fix the problem.
If Windows restarts or shows a stop error, write down the error and stop launching the game until you have checked Windows, the graphics driver, memory, and temperatures.
ⓘ Sources and verification
Checked against official documentation on . Scope: Windows PC.
If a button or setting has moved after an update, use the linked official help page to find its current location.
