questions about --scale and N_max

[Moreland-cas]

Thanks for your great effort!
I have some doubts about the --scale parameter, I notice that when you benchmark ngp, you set scale=0.5 for default and 16 for 360v2 dataset, how does it help?

Also when I tried to set scale==1 for tanks&temple, the psnr dropped significantly (from 28 to 10), Are there some other parameters I should change?

Also, is scale bounded to the N_max of the hash grid? cause I found this line of code in networks.py?
"""
b = np.exp(np.log(2048scale/N_min)/(L-1))
"""
I believe N_max is 2048scale in this case and scale is from the --scale from the opt.py or command line right?

Looking forward to your response! Thanks Again!