Problem
Timeline playback becomes inconsistent after enabling a high-quality optical-flow preview mode.
Solution
Root Cause / Diagnostic:
High-quality optical-flow retiming algorithms (such as SpeedWarp or Enhanced Better) execute complex bidirectional vector motion analysis for every interpolated frame in real time. Calculating these motion vectors on the fly overwhelms the GPU, resulting in severe frame stutter.
Actionable Fix:
1. Switch timeline retiming preview mode to "Nearest Frame" or "Frame Blend" during active editing and reserve optical flow strictly for final rendering.
2. Generate an optimized timeline render cache for the optical-flow clip by right-clicking and selecting "Render Cache Color Output".
3. Scrub the retimed sequence to confirm real-time playback velocity holds steady at project frame rate once cached.
Pro Tip:
Keep retiming mode set to standard frame blending while cutting; activate advanced optical flow (SpeedWarp) only during final mastering to preserve interactive editing responsiveness.
High-quality optical-flow retiming algorithms (such as SpeedWarp or Enhanced Better) execute complex bidirectional vector motion analysis for every interpolated frame in real time. Calculating these motion vectors on the fly overwhelms the GPU, resulting in severe frame stutter.
Actionable Fix:
1. Switch timeline retiming preview mode to "Nearest Frame" or "Frame Blend" during active editing and reserve optical flow strictly for final rendering.
2. Generate an optimized timeline render cache for the optical-flow clip by right-clicking and selecting "Render Cache Color Output".
3. Scrub the retimed sequence to confirm real-time playback velocity holds steady at project frame rate once cached.
Pro Tip:
Keep retiming mode set to standard frame blending while cutting; activate advanced optical flow (SpeedWarp) only during final mastering to preserve interactive editing responsiveness.