Just installed Pro a week or so ago and now my computer slowed way down. Sometimes web pages time out or get stuck and I have to refresh. NEVER had to do that before. Browsing was super quick. What happened and how do I get back to normal?
did you remove your previous used AV before installing avast?
did you run that vendors removal tool to clear all leftover files?
removal tools and instructions https://singularlabs.com/uninstallers/security-software/
or this https://www.avast.com/en-eu/faq.php?article=AVKB11#artTitle