Maybe their rom is more well developed and implemented.
Anyway, i did a search online and found this..i applied but doesn't feel much diff actually.
Maybe u guys can try out and tell me is there any improvement
System Settings -> Developer Options.
Enable the Developer options button in the top right corner.
Scroll down to Drawing.
Select Window animation scale, Transition animation & Animator duration scale (all separately) and change each values to .5x
You’re done !

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