Disable IPv6

Disabling IPv6 can speed up your internet connection (As long as you’re not using IPv6!).
To disable it, you will need to edit the following file: /etc/modprobe.d/aliases

sudo vim /etc/modprobe.d/aliases

And find the 'alias net-pf-10 ipv6' line, and repleace it with the following:

alias net-pf-10 off ipv6

Next step is to reboot, and see if your internet connection id any faster.
To check to see if IPv6 is running, run the following command:

ip a | grep inet6