Light distance and stem quality

Are you sure that light is 200W?? Light manufactures tend to lie or exaggerate specs on equipment so it looks more appealing to the consumer. If you can drop us the make and model we can find this out for you. I have a feeling all the LED's in the light ran at max setting could total 200W but no one runs a LED at max, "max as in the diodes upper limit before burning out not the dimming knob", the manufacture normally only pushing about .25w-.5W to a diode vs the full 2W it can handle. This is to make them last longer and not prematurely degrade, there are other reasons as well but thats not the focus of this. When we refer to wattage of LED's its not the theoretical power it could consume, Its the amount of power it draws from the wall when turned on in full. In short I feel your light is not a true 200W led light and its specs have been inflated. Send a DM with your model and I can try and find it. Good Luck!