The synchronization of Bitcoin Core is…
The synchronization of Bitcoin Core is taking a very long time, it's been more than 5 days and only 25% is completed.
The maximum download speed of the internet is 20 Mbps, and the maximum upload speed is 5 Mbps.
It's installed on a laptop with Ubuntu server and a Celeron N3350 @ 1.10GHz processor.
The installation tutorial is available on the Ministry of Node :