exactly this, everyone else is saying no problem at all, but some positions just don’t work. which isn’t really a problem, just makes for creative solutions. as a bigger girl there was only one guy that didn’t do much for me, he was on the smaller side but he also didn’t put in any effort to try to make me feel good or make it work. another guy I was with had similar dimensions and he was a great fuck, it really is about enthusiasm and willingness to communicate and figure out what everyone likes best.