I have tried it for months on desktop - not as secondary or main, but as the only browser.. and a lot. And switched back. I just can not get used to the "slow"

I have tried it for months on desktop - not as secondary or main, but as the only browser.. and a lot. And switched back. I just can not get used to the "slow" pdf engine. On scrolling/paging for split second it is blurry (chrome/ium, firefox are fine). About the other reasons I am not sure, but even if the pdf engine changes, the little annoyances just make Edge as a least painfull solution for who is forced occasionally (workplace/etc), or just only a few minutes per day/week browsing on desktop.