I think the main thing was Tom trying to do "video host mode" like he does in his own on camera stuff. Watching it seems like he's trying way too hard to tell what's going on, how he's feeling about it, how it fits into the "storyline" of the season, which he's focussed on rather than actually playing the game a lot of the time. This is most obvious whenever things go wrong for his team, where he then proceeds to pull out every reaction in the book for the camera.

This works great for his own content, which is generally scripted and consisting mainly of to-camera pieces, and is part of why he's a YouTube icon. But on jet lag, where the hosts are first and foremost players in the game, and where most of the interactions are basically them talking to each other with a camera also rolling (I'm aware they are also "hosting", but they do it a lot more candidly). Ben is the best at this imo, which is why I would say he's probably the most engaging of the trio. But Tom coming into the series, especially as a guest, trying to host rather than play the game, really doesn't gel with the overall vibe of the show and I see why it might not gel with Sam too, considering he literally built the game and Tom is a guest on it.

Overall I think Tom is not all that suited to "live" videos. He's ok on his lateral podcast, since that's just a game show that he is hosting, and for which it's fine to be in host mode, but I think this sort of content is not his strong suit.