Asus zenfone 5z, android 10, not rooted,
The camera takes too long to start after about 4-5 seconds. In messenger apps, WhatsApp the same. It used to work fast before ( under 1sec). Factory reset didn't help. All apps updated. Anyone had a similar problem? I have no idea what to do with it...
Does the issue appear on the stock camera only or on other camera apps (e,g. Instagram) as well?
Please try clearing cache & storage of Camera (long press "Camera">App Info>Storage & memory>Clear cache/Clear storage), then try to re-install 3rd party camera apps and check again.