Technically there should be a really big advantage of using NVMe, from what I have been able to test generally the NMVes offered by Cloud providers are at least 10x faster which would improve a lot of things.
Important to note that in some benchmarks I did I found the Cloud NVMe slower than a local SATA SSD (like the SSD in my PC), but still an improvement.
Adding to the NVMe change, Discourse gets a really good speed bump from the higher frequency, so that helps too.