Instagram video upload issue

I have problem uploading a video on instagram, it always stuck on approx.(40%) and it never completes. then it ask me to try upload again.

I have this problem for a while ago, I have flashed different roms with clean installation,

My phone is i9300 and I'm currently using this rom [5.0.2] Temasek's UNOFFICIAL CyanogenMod 12 latest version.

Any ideas? :rolleyes:

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