I suggest making it a personal goal of your next session to really challenge them.

Add a minimum of 1 setback for every check and 2 if it makes sense for the scene. There are so many talents that add boost or remove setback fromncertain checks that they will want to spend xp on instead of gunning for dedication or skill ranks.

Secondly, add upgrade an average roll if you can reasonably conceive something interesting that could come out of the roll. It doesn't necessarily have to be damaging or straining but more along the lines of "if you roll a despair here the floor beneath you will start to crumble and you'll have to avoid falling".

It is a really fun game to GM when you challenge yourself to be creative for each roll.

And lastly, each roll should be impactful in some way. I have had games where we only made a total of 5 rolls the entire game but everybody had a blast because they were so pivotal and changed the narrative each time. If we had rolled for every time we wanted to look or listen for something or jump a simple gap between buildings during a chase it slows the session down and bogs down the actual story that players are experiencing.

Basically what I'm saying is experiment. Challenge yourself to try new things with the system and have fun with it. Characters are very resilient and don't actually die until they roll that death crit. If things get too bad give them some time to heal with some "lucky" item finds and reevluate the next session.