When we had previous reports for this it was usually because their phone had automatically rebooted from our auto reboot feature (it may unlock slower for first unlocks), or if they are switching between profiles and there may also be a slowness as the profile is starting up.

I can't really say I experienced this myself although I use the latest device which will be faster. My 6th generation Pixel didn't have any noticeable differences. 

 Thank you for your message. I'll keep an eye on it. Just got a new update in and it feels snappier. Many thanks for your work.