Hello, i have notifications delay on my pixel 7a with graphene. It seems to me that phone goes sleep after locking. It happens everytime after 5minutes locking.
All apps battery usage is unrestricted;
Os is updated;
No battery saving;
Vpn off/on still the same;
Maybe there is some settings that i missed?
Thank you.

After screen off, the device goes into doze mode to save battery. You have to check for each corresponding app, if it needs google push for notifications (playservices needed) or has it's own push service and is unrestricted for background battery service.

    Berlino
    Thanks for reply.
    Could you say where to check that app is unrestricted for background battery service?

        Diego
        Go to settings > apps > all apps > 'corresponding app' > app battery usage and see if 'unrestricted' is enabled.