Is it obligatory to pronounce the letter "Jeem" with a "ta'teesh" (palatalized or affricated sound, similar to "j" in "judge") when reciting the Qur'an?

It is not permissible to pronounce the letter 'jeem' (ج) with a 'ta'teesh' (guttural pronunciation like 'ch' or 'g' in 'garage') when reciting the Holy Quran, because it loses its essential characteristic, which is 'shiddah' (strong occlusion), and replaces it with the characteristic of 'tafashshi' (spread of air). The letter 'jeem' is a letter that must be taken care of and articulated from its correct 'makhraj' (point of articulation), which is the middle of the tongue with what corresponds to it from the upper palate. It is among the letters of 'jahr' (audibility), 'shiddah' (strong occlusion), and 'qalqalah' (vibration). Articulating it with 'ta'teesh' removes these characteristics. Therefore, a reciter of the Quran must pay attention to the 'makharaj' (points of articulation) and 'sifat' (characteristics) of the letters in order to recite the Quran with 'tartil' (measured, distinct recitation).