Just a quick update, I put a resistor substitution box insread of R_ISET (R11 in schematic below) and found that when I went from 33k to 22k, all of a sudden the charge current reduced because VBUS was dropping down and turning off the charging every 2ms as in my scope trace above. With 33kohm, the charge current was around 1A. The value just does not make sense, the current is too large for this R_ISET and making R_ISET smaller does not increase the current.
