Why is the image flickering in the VLC player when watching a video?

Question

Video

When watching a movie, if an active access to the hard disk begins, the picture starts to crumble (in cubes). After the activity of the hard drive drops, everything becomes normal.
The essence of the question is how to set up the player so that it has HDD priority, or where in VLC you can set up buffering of data from the HDD so that when the hard drive is loaded, the picture does not fall down
Thank you!

Answer 1

There may be different reasons. For example, the decoder is forced to skip frames that were needed to read the next ones. Why this happened depends on your hardware, on the file being played, on the version of VLC, and potentially a lot more.
For insurance, you can do the following. (Disclaimer: I have VLC with an English interface, so the translation of settings and paths to them is out of my head.)
If none of this helped, then either the file is broken, or there are some stupid compression settings, or the hardware does not pull, or, well, hell will sort it out.

Answer 2

Disable "hardware accelerated decode".