I got a NVMe SSD recently and it accelerated Unreal Engine by the factor of 10 for me. Everything is like almost in a few seconds, including building HLODs or shader compilation.
Only regret, I wish I had known this earlier. Using the NVMe SSD with a PCIe adapter on my 2018’ish motherboard
- M.2 NVME SSD to PCI Express Adapter with Heatsink
- Crucial P5 Plus 2TB M.2 PCIe Gen4 NVMe Internal Gaming SSD - Up to 6600MB/s