In Guitar Pro 6 I have been using a hand mute on the initial fret(s) / string(s) of where the pickslide starts. I then use the tremolo bar tool to set a divebomb for the speed and duration of the slide. This method seems to be a lot easier and faster than inputting a ton of muted 1/64 notes desending chromatically that cascade across 2 bars of music, like I have seen in some notation. It looks much nicer too. While this doesn't look quite like a pickslide in the Guitar Pro scoresheet (and I usually save a separate version of the finished Tab with a more traditional notation for the pickslide), what I end up with in the Rocksmith chart is something that looks and acts like a pickslide. And, to me anyway, it looks like a pickslide sounds...if that makes any sense. Rocksmith doesn't seem to be super anal about how it is actually played, and because a pickslide is mostly an ornamental technique instead of actual notes, all that is required is a reference marker of the starting point and duration of said pickslide. I have also been using the tremolo bar tool to do my slide ins and slide outs with great results. When I was using the actual slide in and slide out markers in Guitar Pro, Rocksmith was only showing the fret number of the start of the slide in/out instead of the note that the slide actually resolved to. In other words, the slides were reading like grace notes and only the fret numbers of the grace notes were showing up, instead of both the grace note and the true note of resolution. Since the desired effect of a slide in/out is purely ornamental, this method works just as well as it does for pickslides and Rocksmith doesn't seem to be too anal about these either. Hope this helps.