Guys, I confirm I don't have the OIDN crash issue described above with Lux 2.4 - it works as expected, I won't be using version 2.3 anymore.
Thanks a lot for your time and happy coding.
I tried switching to Lux 2.4 previously when it came out (because of the Cuda goodness, etc.), but I found out it produced around 15% less Samples/Sec on my system as compared to 2.3, everything else (scene, settings, etc.) being exactly the same so I ...