So, I am making a game with a very detailed hand drawn vector sprite which is at 1000% size. When I added a effect block it made the sprite super pixelated like bitmap mode. I did the research and found out the project switched to stage 3d mode because of the effect blocks. But when I took out the effect blocks and reloaded the page, it was still pixelated. Could some explain how to fix and why this happens?

Scratch 2 had two different rendering modes, depending on whether your project used certain graphical effects or not. Scratch 3, which we have now, always renders in its equivalent of “Stage 3D”, regardless of which effects the project uses, so that probably isn't the issue here.

Clicking the green flag or reloading the page usually clears graphical effects, so I have no idea why your sprite stayed pixelated. If you can get the bug to happen in a blank project, perhaps you could share that with us?

Oh, and this thread probably belongs in Bugs and Glitches. I'll report it to be moved there.

@rdococ thank you