Same issue here. Even if I have > 100 Tabs open, Opera freezes on starup and I have to wait about 2 mins to get it work. Starts about 2 days ago, as the reddit posts say.

Browser: Opera One(Version: 120.0.5543.161)
Chromium-Version:135.0.7049.115

Hi Dear Opera Team and users,

I've been looking for a suitable solution for Opera to synchronize and back up tabs live for some time.

Ive tried many addons, just chrome addons. Why? Because Opera has less addons and the addons which are exist for tab saving are no good.

Opera is talking about "tabfulness" https://tabfulness.com. I think, real tabfulness is the freedom, work everywhere on every device with the same tabs open and same settings to not interrupt the workflow.

Yes, Opera per se has tab sync functionality. But this is not worth mentioning.

Why? Real tabfulness and real tab sync / saving has the following features:

• Sync tabs LIVE across devices, without manually opening them
• automatically sort the tabs into the workspaces without manual sorting them
• automatically save and backup tabs including workspaces

I think many people love to see this feature.

We hope for an opportunity to develop an addon or functionality.

Freshy