If you're considering updating your Oppo F3 to Nougat, I recommend checking the XDA Developers forum thread for more information and user feedback.
Users in the thread report that the significantly improves RAM management on the F3 compared to stock Marshmallow. “I can actually keep two apps open without launcher redraws,” wrote forum member @retro_phone_lover . Opposite F3 Nougat Update Forum Xda