Razorcut 45 Missfire/arc issue

Torch is unpredictable when firing and starting the arc, sometimes it works fine but other times it completely fails to arc. The steel is clean, my pierce height is correct if not a little close. I have appropriate earthing and air filtration. The torch consumables appear to be in order and yet I’m still having these issues. I’m going to upload a video comparing the firing of the razorcut 45 to my hypertherm 30xp which always arc instantly.

I’ve seen other posts about this although they were a little different or did not have an answer. Thankyou to anyone who can help