[wrxtasy]

the fact that this chip doesn't support variable bitrate is very limitating, most stuf outh there have variable bitrate, what chip can read H265 and variable bitrate?

You are dealing with a very new codec here in H265.

I have been testing this device for the last three months and have not encountered any VBR H265 video. Simply none. Tested a lot of H265 clips in that time as well. Whoever is encoding this H265 stuff needs to set a constant bitrate for H265 video encoding for maximum compatibility across numerous devices.
I strongly suspect this VBR H265 video is encoded outside the specifications that companies build their chips to decode H265 in the first place and a new device will not help.

You may be confusing VBR Audio with video. There is an enormous amount of VBR audio.