[MC-187345] Performance decrease in 1.16 compared to 1.15.2

Moderator Note

Based on the experience with ~~MC-45458~~ and ~~MC-138114~~, we will keep this report closed until someone experiencing major performance issues when comparing 1.15 and 1.16 can back it up with detailed data, including potential fixes - due to the massive changes in rendering, some performance impact is to be expected however. Thanks for your cooperation.

Don't really know if this is cause of my computer spec, but didn't notice this kind of lag-spikes before 20w21a

Only render distance causes this and 10 chunks seems to be critical point, where red spikes starts to show often

Windows 10 Home
CPU Intel Core i5-8400 2.80 GHz
Memory 8 GB 2133 MHz DDR4 (allocated 4GB to Minecraft)
GPU Nvidia GeForce GTX 1060 3GB