I bought a 22 SXP last week and love it, except the
CarPlay lag has been driving me crazy. I talked to Apple support and none of their suggestions made a difference. But I was messing with the system yesterday and I think I may have found a solution. If you hit the Phone Projection button, then
Apple CarPlay, and check the Use Split Screen box, it seems to fix the problem. The
CarPlay display is smaller, which isn't ideal, but it's worth the tradeoff to not have the lag. I drove about 20mins yesterday after changing this setting and the lag was completely gone. You can swipe up and down on the new small area to show weather, time, kia nav, compass, or a couple other things. I think just showing the time is the cleanest option. Hopefully there is a better fix down the road, but this should keep me sane in the meantime.