I think that FAQ entry may miss some needed details for some users like me.
I have two computers, and I have Multiplicity 3 KM license. Why not using it? So, set it up, toss a mouse cursor to secondary, and experience the mouse cursor SOMETIMES lag.
I got immediately confused. I had no problem with LAN speed, stability, LAN set up problem, both machines are on Windows 10 22H2 at that moment, that mouse and keyboards were perfectly fine for both computers when they are directly connected via USB. Primary PC was running on R7 5800X, and secondary PC was running on i7-4770k.
With all of confusion, I went to find a manual. FAQ says, lower DPI and polling rate. This confused me again because the mouse cursor is not always lagging, but they do lag pretty much like 70%. I downed mouse's polling rate to 500Hz. Mouse suddenly work very well on secondary. Still, my confusion didn't went completely away because my keyboard is also 1000Hz, it didn't lagged with normal workload unlike the mouse.
I ended up just giving up lowering polling rate, it added me too much chores. Instead, I tossed the mouse cursor, and bring secondary's mouse instead while typing the primary keyboard anyway. I blamed Multiplicity at this moment.
After few months, I pushed my primary to secondary and built my primary with new hardwares. My secondary PC got upgraded to R7 5800X.
Guess what?
Mouse no longer lags.
It was all fault of my potato secondary PC.
So, in short...
1. Multiplicity requires secondary computer's calculation power heavier than wired connection. Lowering polling rate is valid solution if you don't need to use higher polling rate on Primary.
2. Because of that, gaming-grade mouse may lag through Multiplicity even though the mouse worked perfectly via USB on Secondary. Keyboards, on the other hand, may not suffer lag.
3. Multiplicity does not have a compatibility problem with 1000Hz polling rate while FAQ says it's uncertain.
I wonder what will happen when Multiplicity need to process recent mice input that uses 4000Hz and 8000Hz polling rate. 
