UEFI and Windows 8 tweaks??

I'm running X3d producer on Win 8.1_x64 and don't use any particular tweaks.

I am running Sonar X2 and X3 on a Windows 8 computer.  I am holding off on installing 8.1 Windows upgrade.
 
About all I alter in Windows these days is:
 
Select High-Performance Power Management Plan, then go into Advanced Settings and disable USB Selective Suspend, and also view/change Power Management Settings > Minimum Processor State and Maximum Processor State to both be set to 100%.
 
That's about it for what I change, as far as what comes to mind.  IF it is a LAPTOP, I also disable the Wi-Fi transceiver prior to firing up Sonar, as those frequently REALLY spike system latency.  This shouldn't be an issue on a desktop.  (I actually have a USB Wi-Fi transceiver on my desktop, but it doesn't seem to adversely affect this computer's latency).
 
Edit - I also turn OFF all Windows sounds, as I don't believe anyone needs to hear those blaring through speakers.
 
Bob Bone
 

Paul P
 
As far as I know, a UEFI bios is just a fancy graphically interfaced regular bios.
 
UFI, MSR and GPT are another matter (useful to access drives over 2tb).  I had a heck of a time getting my windows 7 to install onto my ssd configured with this latest setup.  I hope it's easier with windows 8.
 
 

It's also more secure. Secure Boot requires the operating system, its kernel, and the kernel’s modules to be signed with a recognized key so that the system knows that the code it is about to run actually originates from the source it claims to come from. This makes your system more secure because then it won’t be loading questionable code that it doesn’t know if it’s safe or not. And yes, this is important even during boot-up because malicious code can infect the BIOS/UEFI.