Mini Recorder-drop's signal on HDMI input(+)

I use some PCIe MiniRecorders in capturing PC for create livestreams from videocams. I use Win 7 SP1 x64 systems on i5-4440/Asus B85M-G/4GB RAM/1000GB HDD SATA/1GB GF 650TI hardware.
Desktop Video 10.5
When i use SDI input for capture video - all ok. BUT - when i try to use HDMI input - i lost signal.

It is animated GIF with dropping input
I see that signal losts in unperiodical times, and i try another resolutions, framerate and cables (no more 5m) - result is same.
And in system with MoBo Asus Z87 - result same.

P.S. - as source of video i use PC with Geforce 750 TI (2xDVI+2xHDMI) - with simple HDMI-HDMI or with DVI-HDMI cables. May be all problem in this videocard ? I try Dell notebook with GF8400GS and HDMI cable - no drops

So, almost 3 years have passed - the problem remains, no answers
These boards work normally with SDI-inputs, but with HDMI - problems constantly get out