FPS drops consistently for a few frames every several seconds in a new v1.16.1 world. No mods or resource packs, render depth set to 8 chunks. Happens whether exploring new chunks or building in a small area. More noticeable when turning the camera. FPS rating in F3 display drops to about half for a moment every time it happens.
Win7Pro / AMD A8-5600K APU / Radeon RX 560 series video
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Hi there!
This looks like a duplicate of MC-162253. Make sure to do a quick search for your bug before posting it, and then vote for it, comment on it, and follow it. This is the best way for it to be prioritized by Mojang. Making a duplicate post means more work for the volunteers who help out to moderate and clean things up for the developers to look at and fix what needs to be fixed.

Please read the moderator note on MC-187345.