Improve Low bitrate exports.

as an editor . i always prefer to edit my videos on primier . this days i wont beacause of bad export quality engine in low bitrates . when i use vbr 1 pass i can see my videos pixels moving (some little  squares) its making the video quality worst  . vbr 2 pass is 10 times worst than vbr 1 pass . i should say that i export the same video and the same settings and the same bitrate in davinchi . and what happend . i didnt see any pixels or quality loss . so i want to tell adobe company (fix primier pro export engine and export quality ) it sould give the editors and creators the best quality export better than davinchi