Memory usage BM Decklink

[Holm]

Hello, it is normal that every input, if added to Resolume, uses a part of memory?
Depending on the chosen resolution, the memory usage change from approximate 90MB (Pal) to 250MB(1080p30) per
input.
In my case, i need 4 inputs at 720p50, the value of memory usage is 800MB (without any other content).
Is this behaviour regular, or could i have made mistakes in my hardware- or softwareconfiguration?
The used equipment is a PC on Win 10, Resolume Arena 5.13, X99 motherboard, i7 5820 and a GTX 970.

Thank you very much

[Joris]

Yes, this is normal. The data making up the image has to live somewhere before it gets passed to the GPU.