32chunks server and singleplayer

ADDED:
[17:11:32] [Chunk Batcher 1/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.
[17:11:32] [Chunk Batcher 1/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.
[17:11:32] [Chunk Batcher 1/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.
[17:11:33] [Chunk Batcher 1/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.
[17:11:34] [Chunk Batcher 0/WARN]: Needed to grow BufferBuilder buffer: Old size 524288 bytes, new size 2621440 bytes.

Other than this and maybe small CPU cores utilisation nothing looks suspicious on singleplayer. And Multiplayer shown on picture I added now.

When i try to play singleplayer chunks further than 16 chunks away loads really slowly and in weird pattern. so what i usually did that i creater server and played locally. but the new problem appeared. its affects snapshots i listed and some of older ones. before it was fine but now when i create server with 32 distance i cant connect. it says logging in then downloading terrain and finally drops error everytime and always the same one. my pc is running good cpu and gpu and 8gb of ram so hardware shouldnt be a problem for it and also because previously it was fine. even on older pc. so please fix this cause i really would love to you more than 16 chunks but its broken on server side and partly on singleplayer as well