Definitely worth a go - the phrase "gentle comedy" is usually a TV euphemism for "not funny" but this is warm touching and beautifully observed. Toby Jones is outstanding
Everyone in it is pretty awesome, but Jones is the standout; Lance is just a great character and Jones plays the role beautifully and naturally.
And yeah, "gentle" is often bandied around as a negative, and it has been cruelly described as "Last Of The Summer Wine for Millennials", but they're just mean people, and not every comedy needs tragedy, snark or bitterness.
It's true that it isn't exactly a gag-a-minute like Father Ted or whatever, but it's just great and I don't like anyone who disagrees.