Internal Exception: Servers and Realms won't load

When connecting to public servers and realms, other users will not move/ freeze along with all other actions and events not occurring in real time apart from myself moving. From this I will eventually, after about 3-5 minutes, be "timed out" or have the error message of "Internal Exception: java.io.IOException: An existing connection was forcibly closed by remote host". I've tried uninstalling the game and Java, disabling firewalls, enabling the operating system's restricted environment settings in java and resetting the realm but nothing seems to resolve it. I've tried every solution I've found online. I've also tried to use a different account but exactly the same issue occurs. 

Any advise to help would be greatly appreciated.