I play JavaScript-based word puzzle games (for example, Letter Boxed solution / NYT-style games) directly in the browser on desktop.

I recently switched to Opera (desktop), which is Chromium-based and includes features like a built-in ad blocker, battery saver, and workspaces. From a technical perspective, I’m trying to understand:

Does Opera handle JavaScript-heavy browser games differently compared to Chrome or Edge?

Can Opera’s built-in ad blocker or battery saver impact rendering performance or input responsiveness?

Are there any known browser-level optimizations or drawbacks in Opera for interactive web games?

I’m not looking for gameplay tips—just technical insights about browser performance and behavior for such web-based games.