The design & concept is really awesome. Using Litespeed server is a big thumbs up from me, especially with such eye catching designed sites.
Also, the searches are talking a bit longer than usual, especially with long tails, hence you might need to optimize the database more, I suggest firing up a redis server with private network in the same DC or rack. Memcached might be a good alternative too.
Anyways, Keep going & don't give up!
@DoctorX I made the website to check if the video is alive or not, if the video is dead it will show you the message and if there is the original source in the databse it will try to recheck and found new links. you might have come across some dead videos.
because not all of the videos here are my own, only Google drive and GP videos are the once that I upload.