Well, a couple of things you can check for yourself.

Try pouring water onto the condenser as soon as you start the AC, if it cools fast, then your aux fans may be slow or condenser may be too dirty (clean the fins).

But your symptoms may be as simple as a dirty evaporator... possible din baka nagbabara na expansion valve mo.

I suggest you bring it to Zeagle's shop (Denso Coolmate)