I can confirm for 1.13 release. At first, I wondered if it was because of my bad PC but apparently not. The game is very smooth when standing still but there is a huge FPS drop when loading chunks that it is almost unplayable for those who have a low-end PC. There was no such issue in 1.12.2. This problem is still present when on a 1.13 vanilla multiplayer server.
FuturTybz
I can confirm for 1.13 release. At first, I wondered if it was because of my bad PC but apparently not. The game is very smooth when standing still but there is a huge FPS drop when loading chunks that it is almost unplayable for those who have a low-end PC. There was no such issue in 1.12.2. This problem is still present when on a 1.13 vanilla multiplayer server.