@NeighborGeek with the smart bulbs not sure if I should have them set at 80% or not or if that could damage them. I ended up just capping the line and load together and running a jumper from that to the line on the switch and left the neutral in as well. This keeps the load of the lights off the switch while still keeping the switch powered to be used in the smart bulb scenario. It’s not ideal because the lights are hardwired on permanently with no way to cut power to them but they aren’t flickering!
I found the other post referenced (Red Series Dimmer - Flickering at Full Load - #6 by feens) and @EricM_Inovelli is tagged there as well so I’ll see if they have any ideas.