for instructions specific to your file source. Whenever I download something, the download will start off well, at a few mb/s and even up to 40+Mb/s, but after about a minute it slows down to less then 1mb/s, and I have to restart Steam hopping servers from other countries. Codec is short for Compressor-Decompressor. MO2 should find the download info for you * For other files (ENBSeries, SKSE, SRO, etc. Ant Download Manager (AntDM) is a quick download manager for any Internet file, that fully integrates with all popular browsers.