Btw for low latency:
INTEL CHIPSET DRIVER: INTEL ENGINE OR HOW IT CALLS IS RECOMMENDED TO NOT INSTALL - tho some users having had fps drops without them, it depends as with everything, THEY CAUSE INPUT LAG tho, SAME FOR INTEL SATA DRIVERS. But if you need copying fast you have to install them. Usb drivers you should install from motherboard website, or intel site probably, windows already installed latest, but not necessarily. FORGET HOW IT CALLS, USUALLY IT IS NOT RECOMMENDED TO USE PROGRAMS OR DOWNLOAD FROM SHADY SITES DRIVERS
Set everything you can into msi mode, except gpu, on nvidia said it specifies msi-x number in drivers programming, but with msi mode on i have lower latency, strange. And lines in nvdispi.inf msi 1 are for old devices which would stop working otherwise.
I tested in windows, i have razer death adder elite, 500hz and i move mouse at the straight line across monitor. I got under interval vs time 80 us, also latencymon reports execution time under usb 70-100us.
I have optimized interrupts, everything in msi-x mode except usb 2, unfortunately doesn't work on my motherboard - intel series 7 chipset.
Btw affinity setting for drivers are ignored at hardware level said latencymon support, if you wanted assign one core for only for usb, it could be ignore by hardware. Also today usb should support msi, even usb2.
About priority control, it is supposedly old residue from windowsNT and it is not clear it works, but i am sensitive to input lag and mouse feels snappier. I have to yet test it, with latencymon and mousetest ... Also there is under hklm/currentcontrolset/enum/device - devicepriority dword value under affinity of drivers in regedit, which should be same thing like priority control. My nic set it to high after installation of latest drivers.
You can turn dwm off in windows 10: https://www.reddit.com/r/Windows10/c...mposition_for/
But maybe you will get black screen in fullscreen mode, problem is windowed mode may cause frame drops. Go into win+r gpedit.msc windows components and disable everything under dwm, it reduces latency slightly.
In windows 10 it is possible appearance setting may not save, if you disable themes services, there is way to set it in registry too, currently it is working for me tho.
Also windows updates are problem, there is wutm wrapper script which disabled auto updates, but checking every update for issue manually takes a lot of time.
You can delete flash player from windows 10 seems to reduce input lag.
Deleting sheduled process, even like google chrome, or changing any setting, caused for me weird lag, which disappeared only after reinstall, so i am afraid to change sheduled processes in microsoft sheduler.
BTW you should probably check motherboard before buying pc, even expensive asus motherboard suffered from high dpc latency and every feature it has.
I tested this tweak again and take it back, it doesn't feel snappier, tho previously changed yet cmos and gpu priority, which i read it can help in one book, so i can be that, i need yet to test order of these. I put irq number of my 1E2D usb ehci controller under prioritycontrol and tested it latencymon (while maxed polling rate), i got much higher like 108~us with this tweak and mouse feels ****ty, than without - 88~