Reduce the amount of data that your client has to process. Make sure that your inventory isn't full (best option is to carry only items that you actually need), don't learn every possible engram (try mindwipe when getting buffer overflow), being in your base – turn off the structures that are running but not currently needed – such as tek replicator or forge, remove items and dinos from your game data (uploads), don't carry too many soultraps (and best don't upload them) as they hold a big amount of information, move to a less populated area, reduce your graphic settings – especially view range and details – the less you process, the better for you.
It appears that sometimes you can get this error with no visible reason [aka: Ark being Ark], then try to respawn.