As I'm playing on the realm I created I will at varying intervals drop from the game with different warnings/reasonings coming up:

• io.netty.handler.codec.DecoderException: java.io.IOException: Packet 0/31 (ty) was larger than I expected, found 2049 bytes extra whilst reading packet 31
• io.netty.handler.codec.DecoderException: java.util.zip.DataFormatException: invalid distance too far back
• java.net.SocketException: Connection Reset

These could happen seconds apart or the longest it's gone has been approximately 45 minutes.

I've attempted many different methods to try and fix this (i.e. redownloading the game, moving where the game is stored on my computer, checking my internet connection, updating Java, updating DNS settings, and looking at my firewall settings as some have suggested online).