Your doint the inner loop 8 times for each pass thru the outer loop which in turn you do 9(?) times for a total of 72 times. 72*2000us is 144ms and this does not include any time spent outside of these two nested loop. Measure it yourself and see how much time it takes.
as i pointed out a year ago
https://www.picbasic.co.uk/forum/sho...923#post148923
post #7

there are much better ways indicated in that post too