Newbie Liyu SC631E Software

I have just purchased a second hand Liyu SC631E vinyl cutter without any software or drivers, after searching the websites for software with my cutter supported I decided to try Flexi-10 and it works perfectly fine. The only problem I have with is it when you use the auto trace function the edges are not smooth and I can't find an option to correct this.

So my question is i'm after some better and professional software that supports my cutter and has the auto trace function that works better.

regards