PBR render speed

[AlamoChief]

I just bought a new LG 32" 4K monitor and found my PBR render speed was slower than on my 27 Inch monitor. I discovered that the size of the window affects the render and denoise speed. With the window size the same on each monitor the speed is equal. If I shrink the window size to about 8" of render display the time to render and denoise is almost instantaneous. If I have the window full size on the 32" display the time goes up to about 9 seconds to finish rendering and denoise. I now know that if I'm just looking around to see what the model looks like a smaller window will speed up the process greatly. I hope this helps to understand how the render speed works. 

[jtcapa1]

Thanks for that David,

It was a helpful time. Especially for PBR walk throughs.  I've got one running now (300 seconds long) that needs 4,500 frames and at least 24 hours to run on my 4070RTXi card and 27" monitor.  I should have made the window smaller.