One of the things a thin and light laptop needs to qualify as an ultrabook is a solid state disk. These SSDs are faster than traditional hard drives, and they use less power and generate less heat.
AMD's SSD caching technology dubbed StoreMI has received its latest update today. The new version 2.1.0.205 brings Windows 11 support which means it may work better with Ryzen-based Windows 11 PCs.
It's not always the drive, it's also what controls it.
Most SSD slowdowns are just missed settings and neglected maintenance.