I'd like to share one specific issue that I've noticed recently. This issue is specific to Legacy USB hands-off (BIOS to Operating System).
This issue can be reproduced with the following configuration:
- BIOS Version: 5936
- Legacy USB --> ENABLED in BIOS
- Windows 7 (32/64-bit) installed on any SSD (SATA 2 OR 3)
During a cold boot or reboot, a slight stutter (consistent on every boot) exists when Legacy USB hands-off (BIOS to Operating System) takes place. With GUI boot enabled in Windows 7, an obvious stutter (about a quarter of animation loop skip) will occur during the stated hands-off.
To validate the issue, disabling Legacy USB support in BIOS or enabling USB boot optimization will effectively remove the stutter.