The fact that you have FC=5, CC=1 suggests that you either have some goop yet to 'burn up' OR some algae that competing with you for control of the pool. Either could explain the high chlorine usage; with both you need to add a LARGE dose to either burn up what's left or kill all the algae. With CYA=160, you need to add at least enough to get you to 25 ppm. I don't see your pool gallons, but you'll need to add 5 gallons of plain 6% bleach per 10K gallons of water . . . and you should round up. So, if you have 25,000 gallons add 13 gallons of bleach, preferably in the evening.

Brush the pool the following AM, and then retest.

Read the "Best Guess" page for an explanation.