extern void godot_js_os_download_buffer(const uint8_t *p_buf, int p_buf_size, const char *p_name, const char *p_mime); typedef int (*GodotJSWrapperVariant2JSCallback ...
The Interpolation Buffer is by default 3 server frames long (Interpolation between 4 Snapshots). So if the latency is 50ms and one server frame is 50ms, the Interpolation Buffer would be 200ms long.