I have a world thats about 100mb big. After the update it started to lag always after 10-15 minutes. Its not a problem with my xbox because my friend also experiences the same lags at the same time in my world.
For more information: i have 8 addons installed and i have the vibrant visuals activated in settings but i dont play with it or turn it on.
For better to understand this for moderators team and mojang team, you will be providing some proof with a video.