Speed problems with st7735

Other Hardware Displays
6

I changed the display void. Got 20 fps but I really would like to get it up to 60. Any suggestions... :confused:

void st7735::display() {
	setAddrWindow(0, 0, 159, 127);
	DC_HIGH();
	CS_LOW();
	
	for(uint16_t x=0;x<1280;x++){
		
		for(uint8_t b=0;b<16;b++){
			if(tftbuffer[x] & (1 << b)){
			SPI.transfer(0xFF);
			SPI.transfer(0xFFFF);
		}else{
			SPI.transfer(0);
			SPI.transfer(0);
		}
		}
	}
	CS_HIGH();
}