Are you using the USART for anything else in this project?
And is this thing on a breadboard, or already on PCB?
Wow, pretty impressive! No the USART is not being used for anything and everything is on a piece of vector board now. The main purpose of the pic is to control the speed of two motors via pots and then hpwm to a L298N chip. A few pins are used for limit switches and thats about the extent until this display idea came up. All that code is running fine. The display shouldn't update unless the adcin value changes.

Two speeds need displayed, something like this:

RPM:
400
IPS:
0.70

or like

RPM IPS
600 0.40

Only the first two digits of rpm will change (560,570) and ips will never go above 0.80. Many thanks for your time.