Nvidia Volumetric Lighting Update Speed?

I’m working with NVVL in Unreal Engine, and am driving a spotlight’s intensity from a blueprint. I have it cranked up, but multiplied by a value (normalized) that changes rapidly. If I use the volumetric lighting built into Unreal Engine, the change is visible. However, with NVVL, once it hits a high value, the volumetric effect stays “stuck”. I can only assume this is because NVVL has a slow update rate when it comes to intensity?

Any insight on how I might remedy this would be appreciated!

That would be a great leap for speed. Hope you will figure it out.