PIC18F47J53 Speed

#pragma config PLLDIV = 2           //Divide by 2 (8 MHz oscillator input)
#pragma config CPUDIV = OSC1        //No CPU system clock divide
#pragma config OSC = INTOSCPLL      //Internal Oscillator mode, RA7:6 PORT FUNCTION
#pragma config IESO = OFF           //Two-Speed Start-up disabled

........

unsigned int pll_startup_counter = 600;
OSCCON = 0;
/* Setup the Internal OSC for 8 MHz*/
OSCCONbits.IRCF0 = 1;
OSCCONbits.IRCF1 = 1;
OSCCONbits.IRCF2 = 1;
        
/* Wait until OSC is running and stable*/
while((OSCCON & 0x0C) != 0x0C);
        
OSCTUNEbits.INTSRC = 1;
OSCTUNEbits.PLLEN = 1;  //Enable the PLL and wait 2+ms until the PLL locks before enabling USB module
while(pll_startup_counter--);

void config_uart(void){

    unsigned char config=0,spbrg=0,baudconfig=0;

    /* ---PPS Configuration--- */
    PPSUnLock();
    iPPSInput(IN_FN_PPS_RX2DT2,IN_PIN_PPS_RP20);            //Configre RP20 as RX Pin
    iPPSOutput(OUT_PIN_PPS_RP17,OUT_FN_PPS_TX2CK2);         //Configre RP17 as TX Pin
    PPSLock();

    
    TRISDbits.TRISD3 = 1; //RX
    TRISCbits.TRISC6 = 0; //TX

    Close2USART();  //turn off usart if was previously on

    /* -----configure USART ----- */
    config = USART_TX_INT_OFF | USART_RX_INT_OFF | USART_ASYNCH_MODE | USART_EIGHT_BIT | USART_CONT_RX | USART_BRGH_LOW;
    /* -----SPBRG needs to be changed depending upon oscillator frequency------- */
    spbrg = 77;                    //At 48Mhz of oscillator frequency & baud rate of 9600.

    Open2USART(config, spbrg);        //API configures USART for desired parameters

    baudconfig =  BAUD_8_BIT_RATE | BAUD_AUTO_OFF;
    baud2USART (baudconfig);
}

    SPBRG2 = 77;

    TXSTA2bits.BRGH = 0;
    TXSTA2bits.TX9 = 0;
    TXSTA2bits.SYNC = 0;
    RCSTA2bits.RX9 = 0;

    RCSTA2bits.CREN = 1;
    RCSTA2bits.SPEN = 1;
    TXSTA2bits.TXEN = 1;

    BAUDCON2bits.BRG16 = 0;

//....

while(!TXSTA2bits.TRMT);
            TXREG2 = 'J';