Why is the Pixel 6's fingerprint authentication slow?

It has been pointed out that the recognition speed of fingerprint authentication has become slower than the previous terminals for Google Pixel 6 released in October 2021. Google cites the strengthening of security algorithms as one reason.

@madebygoogle I do love my new pixel 6, but the finger print sensor is ruining my experience. More often than not I touch the sensor 6 or 7 times before it makes me enter my pin. I'm holding out for a software fix but it's something that would make me get rid of it if it persists

— Ian (@ ianxcom1) November 6, 2021

We're sorry for the hassle. The Pixel 6 fingerprint sensor utilizes enhanced security algorithms. In some instances, these added protections can take longer to verify or require more direct contact with the sensor. Try troubleshooting steps: https://t.co / uTbifE5Uyo . Thanks. ^ Levi

— Made By Google (@madebygoogle) November 6, 2021

Made By Google: 'The Pixel 6 fingerprint sensor utilizes enhanced security algorithms. In some instances, these added protections can take longer to verify or require more direct contact with the sensor.': Android
https://www.reddit.com/r/Android/comments/qoayk3/made_by_google_the_pixel_6_fingerprint_sensor/

Google explains why the Pixel 6's fingerprint scanner may be sluggish --The Verge
https://www.theverge.com/2021/11/7/22768853/google-explains-pixel-6-fingerprint-scanner-unreliable

@ Ianxcom1 tweeted, 'I like the Pixel 6, but fingerprint authentication has ruined the experience.' Specifically, he points out that if you do not put your finger on the sensor 6 or 7 times, you will not be authenticated.

In response, Google said, 'Sorry for your inconvenience. The Pixel 6 fingerprint sensor uses an enhanced security algorithm. With enhanced protection, it may take longer to verify your fingerprint. It may take longer or require longer contact with the sensor. '

Unlock Google Pixel with Fingerprint-Pixel Phone Help
https://support.google.com/pixelphone/answer/6285273

This troubleshooting has an item 'Fingerprint authentication does not work on Google Pixel 6 and Google Pixel 6 Pro', and @ ianxcom1 applies to the case of attaching a screen protector included in this item. I know.

Google recommends using a 'Made for Google' certified screen protector, and it's unclear if the sheet used by @ ianxcom1 is a certified product.

Third-party item companies that have received 'Made for Google' certification can be found in the list below.

Pixel Phone Accessories --Made for Google
https://get.google.com/madefor/pixel/

In addition, since the fingerprint authentication on the screen used by Pixel 6 is an optical type, it is pointed out in the reply that the ultrasonic type of Galaxy is faster.