I’ve used Thorium in the past and thought it was decent. But given Google’s updates to the chromium project I’ve moved away from chromium based browsers.

I thought the whole downside of chrome permeated anything chromium and any other subset of it.

Thorium’s entire focus is on performance. As another commenter has noted, that means no security updates, and no privacy features.

I wouldn’t recommend it for daily use, but if you are playing a browser based game it’s worth testing out. I used to play krunker.io and I tested it to see if I could get more FPS (FPS equaled faster movement speed back then), but I didn’t see any major performance improvements over the major krunker clients or Microsoft Edge (other most performant browser).