I tested it, and I was a lot quicker with it. This track is full of slow corners which require feathering the throttle without TC. With TC I could almost just plant my foot down out of the corner. Low TC felt a lot like high TC in some mods.TC is not quicker (and even then only allowed on Low), it is just safer. Many of the guys in the league earlier this year drove without TC.
I could drive without it, but in order to compete you'll have to use it, and as I said, that ruins the fun of the mod for me.