Thanks to the OP and all who has contributed to this post thus far. I have been using Opera for a few years now, was also noticing some lagging and strange "hang-up" issues with newest update. I had to resort to switching to Chrome on those problem pages (Canva and YouTube).

Thanks the Ishnlv's recommendations... my fix was switching OFF the hardware acceleration.

For those who are having a hard time finding the setting:
Menu --> Settings
In the search bar on the settings page, simply type: "hardware"
The option "Use hardware acceleration when available" should come up.

Hope this helps someone!