I have been struggling with combining sliding and power chords and am looking for either some overall technique tips or maybe some other things to practice.

Most of this struggle occurs when trying to play a 5th string root note and go from like an strum E5 and slide to G5, strum G5 and slide back to E5. The two items I see occurring are my ring finger and pinky kind of bending and they end up creating a jerky motion and it leads to bad sliding sound that involves buzzing. Also, trying to keep my index finger in place and maintain the muting on the low E string seems to be a challenge.