I haven't seen complete test results, so I'm not really sure if you are making the progress you should.

Regarding filtering, if your filter is not stopping up pretty rapidly, I'd switch to the cartridge . . . and run on low, 24/7.

We're also seeing some filtering problems due to crummy cartridge filters. Apparently OEM, Unicel, and Filbur cartridges are OK. Pleatco, no name Chinese, and private label -- not so much. In some cases, Unicel actually MAKES the OEM cartridge . . . and sells the same cartridge under its own name for less.

This site:
haywardcartridges.com/hayward-cartridges/cx1100re-hayward-cartridge
offers a super deal -- the retail price is below my wholesaler's cost! But, I'm very, very skeptical. The more I dig into this, the more evidence I'm finding of cartridges being sold that aren't what they seem to claim . . . and you have to look VERY hard to find the weasel words or disclaimers.

I'm pretty sure this IS a genuine Unicel:
Unicel C-8610 Replacement Filter Cartridge for 100 Square Foot Hayward CX1100RE @ Amazon
If it won't bust your budget, you might want to go ahead and get one, and put it in. If it does no better, well now you've got a spare cartridge. But, if it DOES clean better, you know that at least part of the problem is that your "Unicel" cartridge wasn't really one.

One other issue: if you pull your existing cartridge, and the pleats have collapsed against each other, do NOT put a new cartridge in, until you've made sure that you won't be over-pressuring it. High pressure (>10 psi change from clean pressure) can collapse the pleats and turn a 100sft cartridge into a bad 20sft cartridge! A single overpressure run can essentially destroy a cartridge. You'd be better to clean at 5 - 6 psi change; your cartridge will last longer.

In your situation, you almost certainly will NOT over-pressure a cartridge, while running on low!