Gear Suggestion Problem

[Lachilo]

Hi, I've noticed sometimes driving around in my 2009 B8 2.0 TDI 170PS S-Line, the gear suggester shows incorrect as in, it'll ask me to downshift when doing less than 1.500 rpm and not asking to upshift before around 2.500 rpm or higher. It happens from time to time and goes back to normal again after a while, but I'm also noticing the Turbo spool is sounding louder when it happens, as if the Turbo is kicking in early to accelerate normally without putting my foot to the floor.

It does however drive normally from what I can tell and no warnings or anything is showing up.

Any suggestions or similar experience, let me know. Maybe I'm just being paranoid.