The worst scripts retry immediately. The best ZXDL scripts use exponential backoff (wait 1s, then 2s, then 4s). This prevents you from being banned by CDNs like Cloudflare.
Open the script and look for a variable called $NE_LIST or $DEVICES_TXT. The best scripts allow you to feed a text file (ne_list.txt) rather than hard-coding device names. zxdl script best
If you are downloading hundreds of small files (e.g., images), reusing a TCP connection is faster than opening 500 handshakes. Look for scripts that use session = requests.Session() in Python or --connection-reuse in cURL. The worst scripts retry immediately