I have the same issue. I run a Minecraft smp server and in the shoping district area I can not get playable frames if I have my render distance above 40 ON A GAMING PC. I do not have any texture packs or mod on the world or mc.
My specs are
Processor Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz 2.59 GHz
Installed RAM 16.0 GB (15.8 GB usable
Rtx 2060 super
System type 64-bit operating system, x64-based processor
Windows 11 pro
Hosting 2 servers on my windows machine. One of them (super flat creative) seems to still be working fine. The survival server seems to have this issue causing the server to restart. This has been going on since .70 update for this world when will this be fixed? This is an URGENT bug that needs to be fixed because currently all of my players can't play on the survival server.