Is the remembrance of Allah better than reading the Qur’an after the Fajr and Asr prayers, especially if the available time is before sunrise or before sunset?

Reading the Quran is an absolute remembrance of Allah, and it is the best type of remembrance. As for the remembrance restricted to a specific time, such as the remembrances after prayer or the morning and evening remembrances, engaging in them is better than reading the Quran at those times, because this is the remembrance that came with the Sunnah (definition). So, the remembrance authentically transmitted for a specific time or situation is better than unrestricted Quranic recitation.