It's pretty self-explanatory, but I'll explain.
On multiplayer servers, the game freezes every few seconds. This isn't supposed to be this laggy, I have a 6-core CPU (not sure if I got that right, I'm not a techie) that runs extremely fast usually. I tried replicating the glitch in Bedrock, and it didn't work, so I know it's not a problem with my computer,
Are you sure you are using 1.16?