DH halves FPS because of... bedrock, apparently?

Info: - Singleplayer/Multiplayer, doesn't matter. - Logs are not neccesarry since they do not provide any useful (or any) info. - This is a DH issue, since I tested it with and without mods. - Does not occur on fabric. This might not be the reason why FPS gets halved, but it's still a performance issue. Link to original thread.