I use regular Chrome, Chrome Canary with Tor button (connected to tor from MacPorts) and Tor browser on the same computer. Obviously regular Chrome is the fastest but Canary/Tor button is just slightly slower (like you would be using an average mobile broadband connection rather than 100 Mbit fiber). However, Tor browser is significantly slower. Why is that?
I don't "push" Canary nor Tor browser by having tens of windows and hundreds of tabs open, instead I use one window in either browser, always with less than 5 tabs.
Furthermore, Tor browser regularly hangs. You just can't open a new window or tab, clicking links or other common tasks. It is currently in this state and the only (?) thing that works are the menus - they work as expected but when you select a commando there, nothing happens. My copy of Tor browser also frequently use a lot of CPU and the only way to fix this is to kill the daughter process.
Why this big difference in general speed between Canary/Tor button and Tor browser? And more generally, is Tor browser unstable? I use Firefox occasionally and it never shows the instability I experience with Tor browser.