Everything I have read says 15-25% pin weight.
Here is the calculator:
Fifth Wheel Weight Calculator
Optimum is 20% for the best towing.
Your tiny photo of your rig seems to indictate your pickup is a bit "down on the rear" with the pin weight you have. Without knowing what the TV is and it's rear axle load capability, its hard to give you a good answer.
From the photo only, my money is on "You are overloaded" and the bounce is the camper driving your truck.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW