I agree with the above post.
Get a larger condom to stop the ring and fitting problem.
As for the drop in erection, I myself could not use them for that fact. I would loose interset no matter what type of games where palyed and would not be able to perform.
So I had to bite my lip and wait till we had alll checks and birth control and things in place before we started having sex. Now have 2 kids
, but that was by choice.