Your node is synching the entire blockchain and validating the consensus rules...
BTC
- NBXplorer headers height: 809817
- The node is synchronized (Height: 809817)
- NBXplorer is synchronizing... (Height: 774627)
LTC
- NBXplorer headers height: 2553174
- The node is synchronized (Height: 2553174)
Watch this video to understand the importance of blockchain synchronization.
If you really don't want to synch and you are familiar with the command line, check FastSync.