Practical solutions to improve rendering efficiency
The rendering speed of OpenUtau is affected by multiple factors and can be significantly improved by the following methods:
- Enable pre-rendering: automatic background rendering during editing, it is recommended to keep it on by default (confirmed in Preferences → Playback)
- Choosing the right resampler::
- The built-in WORLDLINE-R renderer optimizes the performance of the
- Try convergence tools when real-time is critical.
- Avoid using old resamplers (e.g. resampler.dll)
- Hardware Optimization Solution::
- Allocate more memory for the software (Linux/macOS with ulimit command)
- Close other CPU-intensive programs
- SSD Hard Drives Speed Up Voice Library Loading
- Project file optimization::
- Reduced single-track note density (split-track processing recommended)
- Temporarily mute an unedited track (click the M button on the track)
- Periodically clear the outdated rendering cache (Tools → Clear Cache)
Tests show that on i5 processor devices, rendering times for 30 seconds of audio can be reduced from 15 seconds to about 5 seconds with optimized settings.
This answer comes from the articleOpenUtau: free open source song synthesis editing toolThe
May not be reproduced without permission:AI productivity tools " How can I optimize the audio rendering speed of OpenUtau?
English 
简体中文 
日本語 
Deutsch 
Português do Brasil