After Effects: Warp Stabilizer Stuck On Initializing

A bloated or corrupt cache can prevent the "Media Core" from processing new analysis data, leaving the effect in a perpetual "initializing" state.

Outdated or mismatched GPU drivers (especially on Windows with NVIDIA Studio vs. Game Ready drivers). The Mechanism: Warp Stabilizer offloads pixel motion calculations to the GPU. During initialization, it sends a small test kernel to the GPU. If the driver doesn't respond within ~2 seconds, AE's main thread waits indefinitely. Why it hangs: Modern GPU drivers have "watchdog timers." If a previous operation left the GPU in a bad state (e.g., a complex Lumetri effect), the driver silently queues the new kernel. AE never gets the "ready" signal. warp stabilizer stuck on initializing after effects

Warp Stabilizer is unique because it must analyze the original pixels of the footage before any other effects are applied. In After Effects, the render order is strictly defined: Masks, then Effects, then Transformations. However, Warp Stabilizer breaks this rule—it tries to work at the source level. A bloated or corrupt cache can prevent the