I have corrected a similar concerns in the past. Check/clean your filter first, remodels leave a mess in the pipes which gums up a cartridge filter. Add about 1/4 gallon Muriatic Acid to the water and bring the pH to 7.0 to 7.2, set your cell to boost output and bring the chlorine content to 10-15ppm. Keep the pump running 18-24 hrs day. Hold the 10-15ppm chlorine for several days while brushing the entire pool at least 1x per day. Make sure Stabilizer(CYA) is 50-70ppm. pH will increase while in generator is in boost output.
If you don't have a boost mode on your chlorine generator, you can use 3 gallons of liquid Shock to raise the chlorine levels. Just shut off the chlorine generator, follow the above steps, add Shock and then when levels return to normal turn the generator back on.
Also, because your off a fresh remodel, it may be a good idea to check the pump impeller for debris lodged in it. A small piece of debris from your remodel could have made its way in to the impeller flutes. Even if the filter pressure is good, the small debris could drop your flow rate
Furthermore, you might want to bring the calcium up to the 250-300 range if you're using regular grout. Even if water is within LSI, the water can leach calcium from the grout and could lead to future grout concerns.
Keep in mind that while an all tile pool is easier to clean, it might be a good idea to add a dose of stain prevention treatment regularly, give it a good hands on brushing and elevate the chlorine levels once in awhile. This keeps the water clean and helps to keep the pool looking great.
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