I have a dell XPS 7100 and am having problems playing 4k video from my drone that plays in my wife's hp split x2 laptop just fine. The dell has twice the processor and twice the ram that the hp has and I have upgraded the video card in the dell to an asus radeon r7 250 thinking that the original just wasn't good enough. When I am trying to watch a video on the dell and open task manager and watch the processor usage it says above 90% and when I do the same on the hp it is below 15% and plays just fine.
What am I missing? and what do I need to show you for help?
I am attaching a screen shot of each of the cpu usage in task manager.
Thank you in advance for any and all help.