I've been dealing with this problem for a couple of years now and it only seems to revolve around dedicated servers considering I don't get this problem in single player.
It's sort of hard to describe but chunks I've already loaded multiple times will vanish and then reappear constantly and it becomes very annoying. It does this with and without optifine.
This is an older video of mine but it's the same issue nonetheless.
It looks like the server view distance is lowered many server owners do this to increase the servers performance your proberly seeing it more on dediicated servers as the servers admns who use dedicated servers tend to optimise their servers more
I've been dealing with this problem for a couple of years now and it only seems to revolve around dedicated servers considering I don't get this problem in single player.
It's sort of hard to describe but chunks I've already loaded multiple times will vanish and then reappear constantly and it becomes very annoying. It does this with and without optifine.
This is an older video of mine but it's the same issue nonetheless.
It looks like the server view distance is lowered many server owners do this to increase the servers performance your proberly seeing it more on dediicated servers as the servers admns who use dedicated servers tend to optimise their servers more
I'm pretty sure you just fixed my almost-three-year problem in less than a minute.
I love you.
Your welcome we try to help