Can play in 4k, but cant watch any 4k movies

[Knap]

Hi, so i connected my PC to my samsung ue55nu7023 4k tv. I can game at 4k just fine with 90-100 fps so my hdmi works fine.

But when i try to watch a movies it starts to lagg so much, like in vlc every 5 sec 1 frame, i can hear every sound.

Tried vlc (3.0.2), MPC-HC, Windows Media Player, Movies+TV. MPC-HC was the best with 1 fps at most.

What am i doing wrong...?

[Zando_]

Rig specs? What format is the video in? 

[Knap]

.MKV

rx 570

i5 3350p

8gb ddr3

 

edit movies are on my ssd

[Knap]

as soon as i start playing vidoes my gpu goes 100% but my cpu stays at 10% at max. 

edit

with MPC-HC, when i use vlc my cpu can reach 60%

[Zando_]

4 minutes ago, Knap said:

as soon as i start playing vidoes my gpu goes 100% but my cpu stays at 10% at max.

That's weird, the RX570 should easily handle 4K playback, it's the CPU that would have a hard time. Are you doing other stuff on the GPU at the same time? I haven't used VLC in ages, but you could have some wack settings in there. 

[.Apex.]

Just now, Knap said:

as soon as i start playing vidoes my gpu goes 100% but my cpu stays at 10% at max.

Whats the Framerate of the video and at what Bitrate? AMD's Video Decoder sucks but it should be able to play 4K30FPS Videos just fine

[TechyBen]

Seems something is trying to put the 4k through the iGPU? Or the Quicksync stream?

Hmmmm. But even then, it should do 4k.

[Knap]

4 minutes ago, _Syn_ said:

Whats the Framerate of the video and at what Bitrate? AMD's Video Decoder sucks but it should be able to play 4K30FPS Videos just fine

framerate 23.976024

cant find bitrate 

[Knap]

7 minutes ago, Zando Bob said:

That's weird, the RX570 should easily handle 4K playback, it's the CPU that would have a hard time. Are you doing other stuff on the GPU at the same time? I haven't used VLC in ages, but you could have some wack settings in there. 

Nope, nothing else, only a single movie at a time.yeah my cpu is kinda weak, but still it doesnt reach 80% so i guess it should be fine. 

i just reinstalled vlc, still doesnt work.

[.Apex.]

2 minutes ago, Knap said:

framerate 23.976024

cant find bitrate 

That's weird.. are your drivers updated?

[Knap]

4 minutes ago, _Syn_ said:

That's weird.. are your drivers updated?

didnt realize i have to play the movie to see the bitrate, it jumps between 3.000-80.000.

edit

yep gpu is up to date, but i mean everything should be good because i just played at 4k, that should be a lot harder then just playing some movie at 4k....

[Catsrules]

Well that is very odd, have you tried a different 4K video file? Does a 1080p play ok? 

 

There are some 4K demos files here https://4kmedia.org/

 

How does 4K Youtube look?

 

Have you tried completely uninstalling and reinstalling videos drivers?

 

[Knap]

4 minutes ago, Catsrules said:

Well that is very odd, have you tried a different 4K video file? Does a 1080p play ok? 

 

There are some 4K demos files here https://4kmedia.org/

 

How does 4K Youtube look?

 

Have you tried completely uninstalling and reinstalling videos drivers?

 

1080p movies perfect

4k youtube perfect

4k gaming perfect

I just started installing windows again on a new ssd starting everything fresh, there was a lot of trash on my C: so i had to do it sooner or later anyway...

 

[Knap]

With the new windows it works perfectly.