Configuring Lovelace for Group Lighting Control

Hey everyone, I’m trying to set up my Lovelace GUI to control a group of spotlights with a single slider. I’ve got the hardware hooked up, but I’m not quite sure how to get the slider working smoothly. Does anyone have a step-by-step guide or a workaround for this? I’d love to avoid switching back to the old interface. Also, if anyone has tips on optimizing the network for faster responses, that would be fantastic! I’ve heard that mesh network health can really affect performance, so any advice there would be super helpful. Thanks in advance for your insights!