The driver has been updated to version 591.44, with a GeForce RTX 3060 Laptop GPU. In the vanilla game (without any mods, resource packs, or data packs), with unlimited frame rate set and VSync disabled, the frame rate stabilizes at 700-800 FPS, and reaches 1100-1200 FPS in the Void.
However, the issue where glowing signs cause a drastic drop in frame rate still persists.
Disable "Force use of Unicode fonts"
Place a sign and write random text (including Chinese characters) on it
Use a glow ink sac on the sign
Press Ctrl + middle mouse button to pick up the sign and place it anywhere
There should be no performance issues
Severe drop in frame rate
Don't update to this snapshot if you have the option, and if you have updated, I would recommend just living with it until its fixed, unless you want to deal with the chunk errors of moving back an update.
After my tests, even if "Force use of Unicode fonts" is enabled, severe performance issues still occur—they’re just not as obvious as when it’s disabled.