Mupen64plus-Next at 640x360 - Image quality

Hello all. I recently compiled the latest mupen64plus-next (develop) on my Raspberry Pi 3 (platform=rpi3-mesa). I use 16:9 adjusted at 640x360, all other settings default except mupen64plus-BilinearMode = "3point".

The image quality is worst than the old deprecated mupen64plus (it looks like a lower resolution). It seems to be only for this resolution or not noticeable at higher resolutions. Is this expected behavior?

Some screenshots:

Mupen64plus-Next: Super Mario 64 (USA)-200226-074421

Mupen64plus (deprecated): Super Mario 64 (USA)-200226-074509

Mupen64plus-Next: Super Mario 64 (USA)-200226-074446

Mupen64plus (deprecated): Super Mario 64 (USA)-200226-074538