Fixed performance issue in Tv Mode + new experimental feature — Nightmare Puppeteer Steam update #397481

Fixed an issue in TvMode that would cause a scene to lag and freeze after a few minutes- should be fixed now sorry about that- Added a clone scene of "Running Man" called "Walking Man" its the same thing except the actors walk instead of run- added a new experimental feature to the "Running Man" , "Wormhole" and "Walking Man" scenes- hold SHIFT and press SPACE to toggle the scene background. Experimenting with this as its useful for making music videos to quickly shift the mood etc-