Bounding onstage with a winning grin and infectious enthusiasm, Eric Lampaert quickly warns the audience that he has a short attention span. He needn’t have bothered with the warning. What seems like a promising show is hopelessly derailed by Lampaert’s distractions as he veers from one improvised sideline to another. Where he begins to explain that he was raised in dozens of different countries, speaks at least four languages and has a rich trove of comedy fodder from these singular facts, he soon loses interest and begins riffing on anything that seemingly flits through his mind. And the show is poorer for it.

A re-enactment of Buffy the Vampire Slayer being thwarted by bloodsuckers of different religions contained initial promise, but like most of Lampaert’s improvs, it was overstated and overplayed. Another bit with gangsters comparing the merits of sandbags is endless and borderline excruciating. It appeared that much of the original show was abandoned to indulge in such ill-conceived comedy. All of which is a shame as he seems a genuinely funny act. Eric Lampaert is charming, his gags can be funny, and he’s definitely engaging, but he lacks discipline and it sinks his show.

Pleasance Courtyard, 556 6550, until 29 Aug, 6pm, £9.50–£12 (£8–£10.50).

Eric Lampaert live in Edinburgh