Door stuck

Anyone got any advice with my problem opening the passenger side door?

When you gently open the door handle its stuck but when you give it a quick yank it opens.

Ive lubed up the locking mechanism and made no difference.  

Easier to explain via video

https://vimeo.com/202603468

Dose it drop any when you open it ?

no drop mate

Take off the inner card get in the drivers side and get someone to open the door as in your video.
Watch the action and see if the lever arms are moving the same in both operations.
Could be a bent arm or a bent housing.
If so, adjust the arm or the housing until it strikes on gentle movement.
just an option.

Yes as the man above says inc check all the plastic clips and the inside of handle

Thanks guys, I'll have to do some investigating then.