[Tuong Anh]

Much thanks to your reply, but unfortunately that wasn’t what i was looking for yet

I’ve finished more than 20 projects with my iphone ’till now, some even more heavily edited, exchanged many times between Sony Vegas and After Effects

This is the first time it happened

Some extra info that i thought might be important:
A few weeks ago i did a CPU clean up and accidentlly plug the graphic card into the onboard CPU graphic card ( the weak on ), which leads to framedrop while playing games and lagging while editing, the preview problem also occured during this period
When i found out the issue i plug my Gtx 1050ti in again and tried to restore most the changes i’ve made when the preview problem occured

Could it be my graphic card that cause the problem ?

[Tuong Anh]

The videos i’m editing are in MOV,
They were recorded from my iphone, then i copied them into my PC
I think this might be the cause too, since other formats works perfectly

Here’re 2 extra pics of my media