Issue watching 4K movie with VLC 3.0.2

Hello, I have a problem watching High rate 4K video with VLC 3.0.2 64bits .
the video is not smooth.
I tried to change the cache of the hard disk but didn't help. (from 300ms to 900ms)

the PC is new and very,  strong so no reason I can't do it ...
Windows 10
CPU : i7-8700K 3.7 Ghz
RAM: 16Gb
graphic card: NVIDIA GeForce GTX 1070
bruno_boccaraAsked:
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☠ MASQ ☠Commented:
Disable the default "Hardware-accelerated decoding"  in VLC, let it use your GPU instead.

Does the video stream use x265 compression?
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bruno_boccaraAuthor Commented:
I disabled the default hardware accelerated decoding.

I don't know what is the coding of the video. the file is a .mkv of 64 Gb for 2:30 hours

just to clarify that I successfully watched this video in the past, and accidently I reseted the default setting of VLC .....

attached 2 printscreen if it can help ...
snip_20180504125944.png
snip_20180504125716.png
1
bruno_boccaraAuthor Commented:
and the hard disk is  SSD
0
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bruno_boccaraAuthor Commented:
I found:  in Input / Codecs, I changed the File caching (not only disc caching) from 300 ms to 1000 ms.
it works perferctly ....
3

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Senior IT System EngineerIT ProfessionalCommented:
I am having the same problem too with x.265 it just won't play on the VLC.
I have also installed KLite Codec pack but it doesn't help.
0
bruno_boccaraAuthor Commented:
resolved the problem by myself
0
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Windows 10

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