You should set them up in a comfortable setting where you can easily get at them and make sure everything works.
How long is the delay?
What phone and android Version do you have?
There is a known problem with older android phones and older versions of android. Wyze was forced to remove hardware decoding form their software.
I’ve a samsung J3 w/ android 7,0, I was seeing virtually zero lag, then they changed the app and I had up to 30 seconds of lag. Made it a real pain to position a camera and made them useless as a backup camera.
Wyze has come out with a test fix for us users of older hardware
It worked for me with an older version of firmware, 4.9.4.38 my lag is nothing.