Disable javascript, trying to get around fingerprinting with javascript enabled is an exercise in futility, and is especially risky with something as heavily monitored as tor.
I like disabling JS myself for some web browsing but this can make fingerprinting easier because most people do enable JS, and I've read that with JS disabled certain things still can be detected through CSS files.
There's three security settings via NoScript in Tor browser. The default has JS enabled.