When I travel to specific location, game start lagging (not like low FPS, but when I break block, it is still there, can't pickup items etc.) World was generated in 1.12 and Im in 1.16, but other locations from 1.12 world are still fine, anyone know any fix for that? LAN is not enabled and it's completly single-player world.
Edit: lowered my chunk render distance and this one part is working, so it's something in distance, what makes game lag.
Do you have any command blocks or massive redstone contraptions?
Or large numbers of mobs, like a chicken farm, iron farm or villager breeder that could have gotten out of hand?
I would try moving around and increasing and decreasing render distance to see if I could find where the problem is.
And then if the area doesn't contain anything important maybe it would be easiest to delete and regenerate the problem chunks.
"Fixing" the problem by lowering the render distance doesn't necessarily mean the problem lies just outside the render distance, it might just be that having fewer chunks loaded gives the game a chance to keep up even if the problem is still where you are.
There are no builds by me, there is no single house, farm, nothing. I never builded something there. Its just world far away, where I live now and where I lived before too. regenerate that chunk would work good, bcs there is abolutly nothing I want. Idk how to do it tho. I went just there bcs I wanted to find donkey, and areas, where I never been/been without doing anything are best.
Also, no command block, thats legit survival, without single command.
(Picture is place where it starts to lag - nothing there)