This user has posted in the MacBookAir forum but received few replies.
M1 MacBook Air is sluggish after macOS Ta… - Apple Community
On updating his M1 8 GB RAM MacBookAir to Tahoe the computer has become extremely slow.
He/she blames it on a combination of Tahoe's Liquid Glass requiring extra processing power and his/her MBA having only 8 GB RAM which is patently untrue as thousands of MBA owners are running Tahoe with no problems.
Can anyone help?