UAD Powered Plug-Ins Manual v5.2 - Just Music

AMD-8131 Compatible Mode is only required when the card is attached directly
to an AMD-8131 PCI bus. If the UAD is in an external PCI expansion
chassis, this mode should be disabled (unchecked).
Important: Do not enable AMD-8131 Mode unless your computer uses this
PCI controller chipset, or performance may be compromised.
Macintosh G5 Systems
The AMD-8131 chipset is used in most Macintosh G5 systems. The UAD software
automatically determines when it is running on a G5 with AMD-8131
and sets the mode appropriately. If the UAD is in an external PCI expansion
chassis, AMD-8131 mode should be unchecked.
Host
Compatibility
Windows
Sonar Compatibility Mode
Tick the Sonar Compatibility Mode checkbox to improve UAD-1 plug-in performance
when used with Cakewalk Sonar. This mode should be disabled
when using different hosts, otherwise audio degradation could occur.
Macintosh
Release all DSP resources on Audio Unit bypass
Some Audio Unit hosts dynamically bypass plug-ins when they are not being
used during playback, for example when no audio is present at the current
playback position. During this dynamic bypassing, UAD plug-ins stay loaded
on the card, which reduces glitches in playback.
Checking the “Release all DSP resources on AudioUnit bypass” option will unload
UAD plug-ins from the card during dynamic bypassing. When the option
is checked, UAD DSP usage may be reduced during dynamic bypassing, but
the possibility of glitching during playback is increased.
Note: This setting affects the Audio Units platform only.
Macintosh
Force Logic to use “live mode” for tracks with UAD-1 plug-ins
When UAD-1 plug-ins and Logic 7.2.1 (and higher) are used together and
this setting is checked, all Logic tracks with UAD-1 plug-ins are forced into
“Live Mode” and latency is reduced. Reduced latency is useful for tracking
when Logic's Software Monitoring feature is active.
UAD Powered Plug-Ins Manual - 69 - Chapter 6: UAD Meter & Control Panel