Boosting ram on rooted device?

I recently rooted my galaxy note, and freezing some system apps did make some difference from earlier almost unusable note. Recently while searching for ram booster on play store I came across this app called Ram Booster (root) by Gejos Enterprise, it has got mostly 5 stars but it requires root to modify configuration and people under feedback do notice difference in performance, has anyone of you tried this and any expert recommend this?

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