Problem with Thumbnails after Deletion of duplicates

Hi, I am having a serious problem with the thumbnails on my website.

1. I noticed that there are many duplicate image files on my wp-content/uploads/year wise folders.. I Believe the reason for this problem is due to image sizes in media settings.. later on i applied the below settings.

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2. There are plenty of duplicate image files in uploads directory so i deleted them by just leaving the original image. Now, My Entire site thumbnails are missing.

My Site : http://www.filmytime.com

3. I tried Regenerate Thumbnails plugin but it’s again creating several duplicate images with different sizes in 1 : 10 ratio…so can you please help me out ?

How can i fix this thumbnail issue on my site ? it looks ugly ?

Do you have any other option ? or else can you please tell the thumbnail image sizes for this theme ? i will leave them and delete the remaining ones ?

I will be waiting for your reply… please reply as soon as possible.