Pixelated video in BSPlayer, not in other players

[luciabs]

Hi! I've installed Bsplayer in a new PC and it's not working fine, the videos looks pixelated. They are not high resolution videos but they look better in other players, like MPC.

That's how it look in BSPlayer: http://i.imgur.com/r7Qzb0u.jpg

And in MPC: http://i.imgur.com/2qMrsJj.jpg

You can see the difference, right?

Codecs: k-lite-mega-codec-pack-12-9-0 (I've tried different settings and it's the same).
Graphic card: Geforce GTX 1060, drivers up to date.

Can you help me? I've been using Bsplayer for years, I don't want other player.

Thanks!