I use Microsoft Edge in Windows 10 to view pdfs because it loads pdfs very quickly, and is smooth and responsive; it takes less than 5s to open 300MB+ pdfs.

Installed Adobe Reader recently because I needed the Fill & Sign function. I use Reader to Fill & Sign pdfs while viewing other pdfs with Edge.

After the installation, Edge takes more than 15s to open a pdf, even with small pdfs under 1MB. It has also become laggy. Chrome isn't affected though.

Completely closing Adobe Reader and reopening a pdf with Edge again solves this issue. It's a workaround but after a couple of days it's starting to get annoying. Please fix this.