Hi, So, I have noticed that Safari has gotten a great deal heavier in recent years. What stood out to me the most, though, is how exceptionally poorly it performs on my Mac Pro - especially after I upgraded it to a '5,1' and put in dual hex-core CPUs. I have 32GB of RAM and a PCIe-SSD as my boot volume, so I definitely don't need to worry about a browser taking up too much RAM or being slow to function in itself. Anyway, the moment I open up Safari and try to type into the URL bar, it gives me a moment of typing lag, and it doesn't render pages as quickly as it should. I'm on 90/90 Ethernet w/ 1ms ping. Obviously not gigabit, but still fast. I take this as a performance issue with Safari - not with my computer or internet. Other than that lag, I also have typing and scrolling lag (very bad) on sites such as Facebook; and what's odd is that my Core 2 Duo 2009 MacBook Pro seems to do better on sites like that. So, I've come to my own conclusion that Safari is very GPU-heavy, but that is NOT to say that I believe one needs a good GPU in their system. I think it has to do with the GPU being genuine and receiving stock Apple drivers. My own GPU in my 2009 Mac Pro is a non-flashed GTX 660, which performs somewhat dismally under the heavy stress of El Capitan, Apple's more recent bloated operating system. My 660 is fine under Windows (of course), and browsing in Windows is extremely fast and zippy. I'm not just talking about loading times - I am referring to the browser itself and how it responds. Is the modern Safari just way too GPU-depedent?