Troubles playing video clips

Hello,
When playing video clips (3 - 10 minutes) with Windows media player, it starts well, but after few seconds the picture starts to "hesitate" becomes in several places pixelated, come for few seconds normal and again starts playing slowly and again pixelated in some places.
There is also time delay with audio.
Started same clip with "MPC-HC" player, sometimes good and sometimes like above. The same clip in "BS-Player" plays good, but I do not like this player.
Since the clip plays well in BS-Player, I do not know what is with the other players, made same experiment with "SMplayer" (portable), after playing about a minute or so, starts to 'hesitate'.
The above happens with some other clips also, but mainly with large W x H clips.
When running the windows task manager while playing video, there is a process "audiodg.exe" eating some cpu and memory resources, but this is a reason for some other thread.
What shell I do to solve the playing problem, and can you recommend some 'normal' player, I searched the internet and what I found is too 'heavy'.
Thanks for answering.
Motim

motim said:

mainly with large W x H clips.

This could be your problem. Your specs says Celeron 2.66 - this might not have the muscle to play HD clips.

Recreate the problem with task manager open and have a look at cpu usage (and RAM). If these are maxing out, then it's an underpowered system for this use.

You seem to have tried a lot of media players, except the one favored by a lot of people here - VLC. Might be worth a shot.

https://www.videolan.org/vlc/

Hello Wasnowas,
Thanks for answering.
If my Celeron 2.66 is too weak, then how come in BSplayer the same clips play well ?
I'll make a try with VLC player.
Thanks again.
Motim

Different players probably use different cpu %. Look in task manager and see the % resources used by each player for same clip.

did you look into the situation of graphics card accelerated video decoding?
are you certain BSplayer wasn't the only software setup to use the graphics card to accelerate the process?
might want to look into how BSplayer was doing the decoding & see if you can get that option in another player.