This ensures that all connections are kept busy until the very last byte is received, preventing any one "slow" stream from holding up the entire process. 2. Multi-Threaded Parallel Downloading
IDM opens up to (threads) to the same server for a single file. why internet download manager is fast
If a new connection becomes available, IDM identifies the largest remaining segment and halves it to put that new connection to work immediately. This ensures that all connections are kept busy