Over the last few months, this has become my experience using Roll20. My processor stays at 50% total the entire time that I am viewing the Roll20 tab. I thought it was my computer being slow, so I rented a cloud server with a GPU, designed for gaming. This has an 8 core Xeon processor, 12 gigs of RAM and an Nvidia Quadro Pro GPU. This was what happens when I am running one session of Roll20 as a GM and one as an observer. This is without dynamic lighting, roll20 video, I have gotten the same results with all api scripts disabled and all userscripts disabled. I can reproduce these results anytime. This has been going on for months - this is the worst it has been.