Safari long launch time and CPU spikes

[snyp1193]

Just lately Safari has been taking a very long time to load (10 bounces instead of usual 3) along with a beachball near the end. During that time I've noticed my CPU has been spiking quite significantly. I have no idea what is causing this. I've already restarted my Mac a few times so far. I'm on a 2019 iMac with an 512GB SSD.

Any ideas?

 

[TimothyR734]

Run your activity monitor in your utilities folder that should list everything that is using memory -cpu-etc you can run system diagnostics from the drop down from the clog wheel at the top sometimes that smooths things out

 

[snyp1193]

It seems like something going on with either the extensions or iCloud bookmarks/keychains tonight which is causing the slowdown. I've always had a couple extensions like Bitwarden, Rakuten and disabling them seems to make Safari run instantly now... I'm not sure what's going on..

 

[TimothyR734]

Most likely it's the extensions as many can't even get the enabled.

 

[snyp1193]

I wasn’t able to fix it. I did a full reinstall of Catalina and now it’s fine. It’s possible there was some corruption in the OS data. ??‍♂️