I think you are mixing up your interpretation of what the FC and HOCl levels mean. Just because the HOCl level is very low does not necessarily mean that there isn't enough HOCl to deal with bather waste fast enough, at least in outdoor residential pools. There is plenty of capacity to handle the bather waste in the FC level as the FC converts to HOCl quickly (half of the FC can convert to HOCl in 1/4th of a second, if needed). The very low HOCl level is nevertheless enough to kill most pathogens quickly (see
this link for some kill times) and is enough to prevent algae growth. It oxidizes some bather waste reasonably quickly where ammonia is mostly oxidized in a matter of a few hours, though in practice this is continual (i.e. ammonia isn't all dumped in at once). Urea is slow to oxidize by chlorine, but this and other organics most likely get handled when chlorine breaks down by the UV in sunlight forming hydroxyl (and chlorine) free radicals that are very powerful oxidizers. For this analysis I assume the FC is at least 7.5% of the CYA level (see the
Chlorine / CYA Chart. It is true that if your FC/CYA ratio is too low, then oxidation rates may get too low as well.
The CC should not be half of the FC but should rather be fairly low, usually <= 0.5 ppm and most often in outdoor residential pools it is <= 0.2 ppm. You say you use Trichlor pucks/tabs, but for every 10 ppm FC added by Trichlor, it increases CYA by 6 ppm. So even with 2 ppm FC per day chlorine usage, Trichlor will increase CYA by over 35 ppm PER MONTH. The higher CYA level is likely what causes you problems unless you proportionately raise the FC level as the CYA level climbs.
High pH has less nitrogen trichloride, but more trichloromethanes such as chloroform. I suspect your high CYA level is causing a buildup of monochloramine and other combined chlorine. Do you know your CYA level? Are you talking about an indoor pool or an outdoor pool exposed to sunlight? Residential low bather-load pool or commercial/public high bather-load pool?
A properly managed outdoor residential pool won't have any bad smell. It will only have the faintest of bleach-like chlorine smell if you churn up the water a bit. You might smell some chloramines (mostly monochloramine) on your skin if you get out of the water since your sweat will continue to react with chlorine, but that's about it. So something is not right with your pool if you are having trouble with its smell. That was the problem you were having in
this thread about a year ago when you first came to this forum.