game crashing at random points

The game seems to crash at random points. I do not own the realm or have a realms subscription but I play on another persons realm. Some days it may run fine but others it will disconnect me after seconds or minutes. I have more than enough storage space on my laptop and this is a fairly new realm meaning I doubt it is due to an overload of mobs. 

My laptop is a gigabyte G5 MD and I know this version has had other issues mostly relating to software updates. 

This happens for only me on the realm (6 other players) and sends me back a minute or two when a load it back up. This has been an issue for a while now and I cannot seem to fix it no matter what I try. The rest of Minecraft and other severs (such as hive) seem to work fine.