In Render Target PMC Hotpixel removal parameter is probably wrong mapped.
When I set it to 0 then hot pixels are removed, but should be removed when I set it on 1. For me this is counterintuitive.
A. Operating System Win 10
B. Graphics Card(s) model GTX 1070
C. RAM Capacity (i.e. 22 GB)
D. Nvidia driver version 388.13
E. OctaneRender Standalone version, if installed 3.06 test 2
F. OctaneRender plugin version 3.08 TEST 4
G. Houdini 16.0.504.20