IMO.... It's always best to join in any tipping towards a stated goal in a room by being part of the group effort. For example, a generous member may think he is "carrying" the room on his own, but the other room members may see him as someone who is in full blown "room controller" mode... especially if he is intentionally trying to beat the tips of other contributors. The big tipper thinks he is a hero, out tipping everyone else, while the rest of the room wants to push him off a high bridge! In an extreme case, they may slow or stop tipping and refuse to participate. From my perspective, that would be what is commonly known as a failure.
It's not always what you tip, but how you tip that can make the impact. Personally, I would join the tipping alongside the others in the room, contributing similar amounts. I often tip as both myself and as anonymous to help promote the frenzy and subtlety match the tips of others [without announcing!]. That way everyone gets to experience being part of the group effort in the room and you may even drag some tokens out of the room lurkers, which would be a bonus.
Sometimes, less is more.
Softly, softly...