CHG_CANON wrote:
Your problem is likely not the NEF file nor the hardware. This discussion had prompted me to find what equipment I'm running. I don't have the same Adobe software, but my system reports an Intel i7-6700 core and 16GM RAM. Your D5300 is just a 24MP sensor, nothing outrageous, especially for a computer that could handle these files previously. Look at your available diskspace on the HD as that might be the issue, especially if you don't have 100GB free on the local drive.
This is our travel laptop, FWIW; and, it's got a 1 TB SSD with 815 Gig free. It did run PS with RAW in the past.