I feel you, though those parts are important to the whole, especially with long-form comics. It's easier to make things snappy in gag-a-day format, but full-blown stories will have periods of chill or establishing stuff, and folks that read long-form should know that.
With my story being a slow burn, I do find myself trying to find ways to reward folks that do read each update though and this has to lead to me revising my script a bit to move things along a wee bit faster, but like in no ways are we hitting Mach 5 speeds lol. It's still a slow burn, but I added more fun along the way hahaha.
It's all so interesting... I want to give a good read, but like these stories are being built up, not presented all at once, so that's what I TRY to remind myself when I hit a lul, but then I do try to think if there is a way visually to even through a side joke or cultural reference I can add a lil something to help it along.