Good news and bad news. Let’s start with some very good news. I found a florescent T8 LED replacement that is working perfectly with my Red dimmers, V2 (i.e. LSW31-SN). That is the Toggled T8 | T12 48" dimmable tubes. I got two sets of the 6500K 2000 lumen ones from Home Depot. I replaced the fluorescents today then changed the Dimming Speeds in Hubitat to 0 by software, 3 at the switch and the Ramp rate for both via software and at the switch to 1 and 1. Model D416-65321-2. Rev 2. BTW, as with most LED replacements you have to remove the existing ballast. They also come with new tombstones, but my electricians didn’t need to use them. I saw on the Wiki that there were zero Tubes listed with the Red dimmers, so I hope this can be helpful to a lot of people.
Now the bad news. I tried the GE Ultra bright candelabra dimmable lights, 100 W replacement, 810 lumens, 5000K. They don’t flicker at full power, but do flicker a bit as dimming up or down and hardly dim at all.
Even worse, the Cree 75 W replacement, 7000 lumens, 5000k dimmable LEDs don’t flicker, but then don’t dim at all.
I have some Feit 40 watt replacements that dim fine, but they are only like 2700 K and I’m looking for something much brighter (75 W or 100 W) and cooler (i.e. 5000K or higher)