@malcolmparkedhere

Appreciate the response, but unfortunately I've already tried turning off graphics acceleration, and the results were unfavorable. It did solve the screen flicker, but it does not solve the "instant" feeling. Also, redownloaded my GPU drivers for NVIDIA, but to no avail; the same problem occurs. I might just stick to static wallpapers for now. Who knows how this problem began in the first place. I genuinely had no issues throughout the years of using animated wallpapers for years.

So the main problem here is related to animated wallpapers for mods. I've been conducting some testing, and whenever I enable live wallpapers like the ones on the main page and then click to a new tab, my monitor flickers several times, then after shows the Opera main page. However, the aftermath is annoying, as Opera tabs are now instantaneous, meaning it appears fast as I click a new tab and close a new tab; they do not appear smooth in general, as appeared in the normal configuration. The only solution I've found is to either disable wallpapers in general or use Opera's primary static wallpapers provided.