Hey! I have exactly the same laptop and exactly the same problem! I think that this is a bug in BIOS, but for 6 months I have not been able to get an official comment from Asus. I changed everything in my laptop, and the motherboard, and RAM, and SSD, but the problem never went away. Obviously this is a software problem.
I think that this is BIOS, because after reinstalling it, the timer between stutters is reset, which is usually 4-5 hours.