This may simply be an issue with how I interface with SN, and the solution may just be to change my behavior (especially if I'm the only person impacted by this), but figure I'll put this out there in case others are also experiencing it.
About once or twice a day, a zap fails. No big deal by itself, since there's a handy "rezap" option.
But the only way I know a zap has failed is if/when I go to the notifications page. Even when the red notification button is on, I don't aways go there immediately; I may be more interested in reading a post on the front page (or multiple posts -- I'm surely not the only one who opens a bunch of items in tabs at once), or comments on a thread I've already got open, etc.
I also, of course, may be doing non-SN things on other sites (shocking, but it happens).
As a result, sometimes I only find out a zap failed hours later. That's not the end of the world, of course. Maybe it costs me a few sats if I zapped a post early but it failed. Maybe, on rare occasions, it costs the poster a few sats in rewards because my re-zap takes place the next day. But there's not a huge impact, other than it being something that I want to fix.
But I do want those zaps to go through quickly, if for nothing else as a way to tell the poster/commenter that their content was worthwhile!
One solution, of course, is to always follow up on every zap I make and make sure I see it go through. Beyond a lack of time, I'm way too disorganized for this option.
Another one, I suppose, would be to check my notifications constantly, or (dear god) enable push notifications. I do not like this one, as it would directly impact the enjoyment I get from SN.
A third option is to do nothing. As noted, it's not the end of the world, and both of the solutions seem like ones that would make things less enjoyable for me.
But a solution that might work, if this is something that impacts others and if it's something that can be done without making the UI of SN worse overall, would be some way to differentiate notifications. Maybe a different color alert if there's a failed zap? Maybe a different icon popping up alongside the cowboy hat and other ones (a rattlesnake?)?
Like I said, this may only be a "me" thing, in which case it's mine to deal with, but figured I'd see if there are others who experience it, and may have other ideas for solutions.