I have an "Intel® Core™ i7-4790S CPU @ 3.20GHz × 8" (as reported by GNOME in Debian Jessie).
If my CPU usage is high, will that make video decoding and/or other video acceleration perform worse? Or is that part of the CPU completely seperate from the normal cores?
I'm currently not using the CPU as main graphic device but I will soon do that, hence the question.
spacebug: Thank you very much for joining the Intel® Processors communities.
In regards to your question, yes, since the GPU (Graphics Processing Unit) part of the processor works together with the normal cores, if there is a high CPU usage, it is expected for the video features to not to work as expected, you might noticed lagging or freezing while playing a video.
Any further questions, please let me know.