In reply to flopsicle:
The only time I videoed myself I was astonished at how slow my climbing was. Very disappointing.
In terms of your number 1 it sounds like the obvious thing to do is get stronger arms. Pull-ups, chin-ups and curls and hammer curls should help quite a bit if done at least a couple of times a week. Also climbing/bouldering on steep, juggy problems so finger strength isn't the limiting factor. Roofs are great if you can find a good one to practice on.
Number 2 could be to do with muscle recruitment. Sometimes such behaviour seems to help to get the muscles properly recruited before a hard pull. Alternatively it could be a psychological unwillingness to commit to the next move, which is a very typical thing to do in roped climbing, particularly when moving from good holds to poorer ones. Adam Ondra's quote is worth bearing mind: hesitation is the climber's biggest enemy.
In both cases I think the fact you've identified the problems is the biggest factor in working towards change.