Capture card dropping frame

[kevin]

Hi all,
I having problem with capture card (Blackmagic Studio Decklink 4K), I running with 4x 4K output, when only play clip the fps still 60 but the problem when I play the capture card 4K@30Hz input, the fps drop down a lot, only around 30fps.
After that I changed to datapath capture card, the result still same.
My system is: 2 CPU Xeon Silver 4114, RAM: 48GB ECC main SuperMicro X11DPG-QT, 2 x RTX2080Ti
Have anyone experience it or same problem before and can fixed it already?
Many thanks,

[Scratchpole]

It's not dropping frames but lowering the framerate of Resolume to the framerate of your input device. Although it is surprising to you it is expected behaviour.