Hello @Hawke, welcome to the forums.
Are your drivers and is your operating system up-to-date?
Does the issue remain if you lower your graphical settings?
Have you tried disabling VSync and setting the Max FPS to Uncapped in the video settings?
Have you also tried to run it in windowed or borderless mode?
Can you also try to open Windows’ task manager after the stuttering issue occurs, and let us know if there’s any spike in CPU, Memory, GPU, or Disk usage?
Additionally, changing this one setting on the Engine.ini has helped some users in the past:
Navigate to Steam\steamapps\common\Conan Exiles Client\ConanSandbox\Config\Engine.ini
Find the section, /Script/Engine.GarbageCollectionSettings
Change (or add if it’s not there) gc.BlueprintClusteringEnabled=True to gc.BlueprintClusteringEnabled=False
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