You can uninstall Antigravity 2.0, then install Antigravity IDE.
If you have history before, find your ~/appdata/Antigravity (windows version) and rename it to /Antigravity IDE.
boom! my old history is restored, almost got hearth attack.
It solve, but I concern no more gemini 3 flash, light model. For simple task (I am doing reporting and analyze field data on antigravity) it exhausted too fast now with all models.
My other bad experience is Extension. I think it is not support some extension, I try install by downloading the vsix but failed.
I ask on gemini chat on web, here it say.
“Install vscode and subscribe for claude” 
I’ll stay on this AG version for a while.