Canon R5 high iso speed noise reduction setting when using denoise

In the Canon R5 menu, Shoot4 tab, item 2, there is a setting for "High ISO Speed NR (noise reduction). Considering that any “noisy” images I take will be processed using DeNoise AI, what is the recommended setting here? Off, low, standard or high? I’m shooting RAW only so is there any advantage to turning this off or does it not matter what this setting is set to for images processed in DeNoise AI? I suspect, but am not certain due to the note about RAW files in this menu setting, that it may only affect JPG images, which I never use. Is that the case?

Unlike the effect on JPEGs where High ISO noise reduction does affect sharpness, using this setting does nothing to RAW images.