The rubberbanding is normal on official servers. It's because the way ark is made the servers save every 15 minutes and there's too many bases/dinos on official so it takes 20sec to 1min every time until the servers can't handle it anymore which can be from a few hours to a few days and crash for 30-40min then roll back 15-30min. If you find a good unofficial server with a higher day number proving it is well established (you can change the server search filter), there will be no lag, less pillars and probably a better place to start.