I wouldn't cancel my subscription right now solely due to high ressource demand from Roll20, but it gets gradually worse with time since the Windows & Doors Update for me, just as a feedback. This might be just a coincident, however - when I'm a player in a campaign run by a DM without any subscription, I also get performance issues. They are a bit less worse there, however. On my campaign with Dynamic Lightning, Macros and other gimmics in all shapes, forms and sizes, R20 CPU-Usage spikes at around 70% from time to time. On the campaign without any DL or similar content, it doesn't get higher than 50 %. Currently, I am willing to endure it for a while, since I really like the work done on Dynamic Lighting, Macros and the overall flexibility of usage potential. It will become frustrating if it continues to worsen, however. I would be willing to have no Windows & Doors for a while until the problem is solved, in exchange for not having a melting PC. (: