@datyee said in opera is using all my memory when watching videos:

crunchyroll

I couldn't confirm in Opera 72.0.3815.186 64-bit on Windows 10 OS Version 2004 (Build 19041.572) with https://www.crunchyroll.com/fire-force/episode-16-mind-blown-797796. Video/page uses around 400MB of RAM for me. Opera uses around 600MB total.