Adobe Premiere Pro Issue

Hi Sir/Mam 

I was using Edius since very long time but i switched to premiere in 2022. From that time i am having issues when ever I upgrade to new version I thought these issues might be solved in this version but all in vein. 

Issues 
1: Optical Flow 
Optical Flow (when we put optical flow a clip with slow motion every 2nd clip gone blurry. 1frame remain focus and the other frame gone blurry) while this optical flow when we use in Edius or Davinci Resolve its super sharper in every frame even we slow down the clip 10% slower) 

2: Nest Clip 

when we nest some clips we get a single clip there namely nested but when we want to those clips back we have to double click on nested sequence then nested sequence open in other timeline and there we can copy and paste to the main sequence. you should do the option when we right click on nested sequence there should be the option Revert Nest Or any thing else at the same time when we press that option all the clips again appear in this timeline