With my screened pool and 20sf filter, I probably did it every 6 months... mostly pollen season. I probably changed to a new cartridge 3 times in the 5 years or so in the house. Maybe more frequent cleaning could have reduced that, but generally, 6 months for cleaning and change every 18 months or so was my maintenance on the filter.
When I had my unscreened pool, I had maybe a 150sf filter. I would clean that one maybe every 3 months. During crepe myrtle dropping season, I had a neighbor with a tree that was close enough to clog things, so, that may have been every couple of weeks during that time to deal with stuff that made it past the skimmer. I am going with a 200sf filter on mine, and a 150sf filter on my feature pump. When I was researching, the larger filters are actually rated for less flow for some reason which was weird to me.
Good to hear on the screen. I understand the thoughts there, definitely makes the pool a little cooler.