If bluestacks is slow, try MuMu
I had trouble using bluestacks 5 on my older gaming laptop from 2018 (dell xps 15), only netting about 60% of the cpm my iphone was getting.
However after looking at alternative emulators and trying a few (LDplayer and memu), i stumbled upon MuMu.
Apparently their older versions were pretty crappy, but after releasing version 12 it runs silky smooth, I am even getting higher cpm now on my laptop than on my iphone (about 10-20% more)
I did spend some time both configuring MuMu settings to give max performance, and going to the Nvidia control panel and changed options to give high performance while sacrificing image quality when rendering MuMu.
Another great thing about MuMu is that it is free of all the bloatware that comes with bluestacks, if you cant stand that like myself.
Really a joy as I no longer have to bring 2 phones with me whereever I go :) I can just remote into my laptop going forward.
Anyway just food for thought if other people have similar issues