Its serious when the person is serious, but as long as theres a voice in your head that authors subjective meanings of fun/he is just a player like me/ it isnt real/he is mad/qq etc, you will always find yourself mixing oorp and rp materials - and most cases it doesnt account for 'clean rp". So, Im not saying we should invent goggles that inject you into freelancer realm, but I think if you can try and put aside all the other aspects and just be focused on the character, floating in space - interacting with people - it will be better.