This is my experience with this: “When presented an idea I often need more elaboration or explanation than others.”
I do this also. I thought I was less clever but time has shown me that I may be more clever in that I required more time but I found that I was looking deeper into the concept than other people, who may only vaguely understand the concept. So I was holding myself to a higher level of understanding than those who picked it up immediately. I also found that other people may not understand at all but don’t wish to look stupid.
I also find that there are some areas I just don’t get and I’m fine with not being a ‘universal genius’ but I’m content to know what interests me.
No idea if you relate to any of this but I thought I’d write it down.
Luck to you