In floor systems are hard on de, cartridge filters, because of the higher pressures, and the uneven pressure that occurs when the valve changes stations, which change from maybe 25psi then goes to 20 then 27 when a new station starts, a few minutes later, it does it again, unlike a pool without an in floor where the psi is 13psi and only gradually gets higher after a week maybe to 20 or so. not all valves are like this, but older ones, and valves that need repair,etc do.
Sand filters have always been the preferred filter to use, the best thing you should do is to ask a manufacturer what they prefer, i am pretty sure they would never honor any warranty on a de filter that they discovered was used with an in floor system, so ask them, a lot of the de cartridge filter tanks i have seen split were installed on in floor pools, you can actually watch the tank swell up when the pump is turned on, from the high pressures. so...