Connection issues due to third parties
Although the speed tests indicate that our connection has more than 20 Mbps, there may be other factors that affect the quality of our connection and, therefore, worsen it, such as the poor quality of the router or the configuration applied by the Internet provider.
Specifically, some Internet providers make use of CGNAT to be able to offer Internet access to a greater number of users. Although the use of CGNAT in daily use is not generally noticed, it can add latency that is more evident in streaming services, such as MTN Cloudplay. You can contact your provider to check if this kind of technology is used, as well as to confirm if they offer the option to deactivate it for your own connection.