Interiors with multiple dimmable lights. Is VXGI my only option for proper GI?

Or are light propagation volumes going to work for this? I haven’t been able to find much recent stuff on LPVs but it sounds like it’s not great for this kind of thing?

LPV isn’t as good with performance and isn’t as advanced. You can do dimmable lights with stationary lights but that doesn’t affect the indirect lighting from that light.

And LPVs are the only option for this besides VXGI?