This read-only integer, with no source description provided beyond its name, counts timeouts occurring in the group's frame-sorting mechanism, which reassembles frames from multiple member links back into correct order. An administrator would treat a rising count as a sign the sorter is waiting too long for out-of-order frames to arrive before giving up. For example, a group whose links have very different latencies could show climbing statGrpSorterTimeouts as the sorter repeatedly times out waiting for the slower link's frames.