Looking for 2 port PASS THROUGH synchronous kvm switch

[bpkdasbaum]

I already got an FJ Gear US-108
8 ports KVM switch USB synchronizer 8 ports synchronous controller
Official Website: http://www.fj-gear.com/US108/show/217.html
If you want to check it out, stay on chinese version and use google translate, the english website does not have any content/info
Basically identical with ShuOne 8 port Synchronouse KM switch (some different shortcuts)

It works okay, but I found there is a technical limit for key rollover when pressing 3 or more keys.

GOOD to OK: Corsair K70 RBG Rapidfire
Functions as normal keyboard & macros/profile can be saved to device if plugged in normally before.
No access to iCUE software when connected through KVM.

GOOD to OK: Mouse Logitech G700S
Functions as normal mouse & macros/profile can be saved to device if plugged in normally before (all additional 10 buttons work and send keyboard strokes)
No access to Logitech Gaming software when connected through KVM.

NOT WORKING:3 key rollover limit.
Meaning when you walk forward (1), strafe(2) and rightlick mouselook(3) at the same time, the mouse will sometimes lose focus due to signal updates of continuous mouse, but catches itself again.
When additionally pressing a spell button (4) the mouse will always lose focus.

It only bothers me on the master character, as he is the tank I am used to having full motion capabilities.
My main concern is to get full range of motion on the master.
My idea to get around this would be to get an additional 2port real PASS THROUGH synchronous switch only for the mouse. So that I can split the mouse and feed it into the PC, as well as into the 8port KVM. I assume that this way I would keep all smooth mouse functionality on my master PC/login, but still clone the mouse output for the slaves via the 8port KVM.

Something like this:



Does anyone know about a 2 port KVM that is capable of real pass through of the original mouse signal and does not create a fake HID mouse?
Does anyone see technical issues with the plan?
Would the AIMOS 4 port be capable of that maybe?

Thanks in advance for any input on this.