I think that's part of Lynn's schtick, unfortunately, being a bit of an "overactor". I dreaded seeing her on WML reruns on GSN. It was obvious she had no questions prepared and spent her time just stalling... I kept yelling "JUST PASS! PLEASE!"
Let's not forget Peter Lawford on 20k Pyramid. In Pyramid's early years, he was a decent player, but in 1979, he was past his prime, and boy did it show. I got an email from a lady that was a contestant that week he was on. She said the producers argued over whether to let him play, especially since he refused to wear socks. Peter appeared obviously drunk and/or stoned, his speech slurred, and unable to stay in his seat throughout the game. His gameplay ability was hampered by being so frustrated with a contestant that was obviously nervous and not playing the game well.