Its a real "misnomer" processor prio has nothing to do with an audio filter.
Normally its the process schedulers task in an operating system to distribute processes and threads across all active cores.
One guy from Microsoft claimed years ago in a big thread on gearsluts, that Microsoft will perform audio optimizations in Win10, proper priorization of audio threads and so on. For the professionals this was vapourware because all this was only available for the Windows sound system, but not for the Pro's using ASIO drivers for their equipment. And also for home use I pretty much prefer ASIO in the Windows world. With Apple its different, they don't have ASIO they have core audio.
If you want to get a much better performance on Windows with a lesser likelyness for audio drops then you can perform several things on your own without getting a software where you do not know what it is all doing to your system:
- disable energy saving in your BIOS, to park or wake up a core from a higher sleep state (i.e. C6) can last over 250 microseconds, this is a lot from process scheduler perspective. C-States to C0/C1 or off (depending on the BIOS)
- disable also all T- and P-States if present
- also to be turned off: C1E, also creates little latency inside of the system
- disable Spread Spectrum as it alternates the clock instantly which is usually not needed, browse the internet for what purpose this is
- Set the process scheduler to priotize background jobs, not the applications in the foreground, by this background processes participate which is important for audio applications
- EIST and Turbo I would keep although you can also nail the CPU to a fix frequency by turning this off. I keep it enabled because then I can control CPU clock by the power profiles of windows. There are nice Gadgets where you can choose then the Windows Energy Profile per Mouse click, also available for Win10 if you install classic shell to get the old startmenue back and Gadget support.
- disable CPU core parking, which BTW is also being performed by Steinbergs Cubase/Nuendo, when you use their fine tuned Energy Profile. You can download a tool from Bitsum which is called parkcontrol, which makes it easy to customize it. I one of my blog articles I described, how I customized this for my recording workstation (which is also for video editing, gaming, office, Internet etc). Written in German though, but I think the pictures and overviews speak for themselves, so that I hope that its useful for you too https://www.tonstudio-forum.de/blog/index.php/Entry/52-BIOS-Optimierung-Supermicro-X10SRi-F/
You can also put into consideration to use Bitsums tool ProcessLasso which is eventually the most advanced product to have a better customizebale process scheduler for Windows. I use this tool to automatically switch to energy saving mode, if I am for 60sec not active on the PC or to switch to a high performance mode once backups or special programs are running like steam (games) or audio applications.
Keep also in mind that Windows 10 had some defects .... up to Creators Fall there was a big issue in the memory subsystem makig Win10 much slower compared to Win7. Since creators fall this flaw has been solved. But still there is one bug present which blocks audio for ~200ms if certain Windows functions are not called with a certain option. Unluckily Microsoft didn't inform Devs about this change in their library functions and they even did not document. In the next early preview they wanted to have it fixed, but I fear for us folks it might last until perhaps Q3 until this might be fixed also for the normal Win10 update cycle. I put together this information in this article:
https://www.tonstudio-forum.de/blog/index.php/Entry/84-Windows-10-better-than-Windows-7-EN-DE/
So .. if you have an audio application or drivers which do not honour this required programming, then you also will have this blocked audio behaviour. Companies like RME react on such things very quick, but there might be other companies who have not yet added this to their Win10 ASIO drivers or audio applications.