Slow to view recents on Android 15

Installed crDroid-based Android 15 and noticed single tap on recents button (on a 3-button navbar) has ~0.4 second delay before it opens the recent apps view. Note the delay is gone if double-tap action on the button is removed, which for me switches to last/previous app. But I've always had this functionality on double-tap. There was no noticeable delay on Android 14 or earlier. Also gave [custom launcher](https://github.com/LawnchairLauncher/lawnchair/releases) a go, but that has the same delay, so it appears to be an OS-level issue. Is this something introduced by Android 15, or is it likely related to specific ROM I'm using? Is it possible to remove this delay?