Found this today.
- A two-month-old laptop with a SanDisk SD8SN8U-256G-1006 SSD for its C: drive, Windows 10.
- Windows had recognized the drive as a standard hard drive, not an SSD, and the laptop had slowed down a lot very recently.
- Installed the SanDisk SSD Dashboard, ran TRIM, and scheduled weekly TRIM operations.
- Laptop much faster.