Pro Tools HD 10.3.10 had its own documented fixes, such as resolving an intermittent input monitoring issue on HD Accel systems that was present in version 10.3.9. However, the "R3" element is where you need to exercise extreme caution. After extensive searching,
Avid Pro Tools HD 10.3.10 R3 Hotfix (Mac) Pro Tools HD 10.3.10 R3 Hotfix avid pro tools hd 10310 r3 hotfix only for mac hot
Here's the exact order of operations for installing the hotfix on your Mac: Pro Tools HD 10