Optimizing OpenWebRX for speed - ha7ilm/openwebrx GitHub Wiki

To decrease OpenWebRX CPU usage:

• in config_webrx.py:
• you can set fft_size lower (which degrades horizontal resolution of the waterfall display),
• you can set fft_voverlap_factor to 0,
• in csdr.py:
• you can set transition bandwidths higher (this degrades filter sharpness by decreasing the length of the kernel, but also decreases CPU usage).