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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
If you are using the official client you can try with idkr or MTZ and experiment with inner client-specific settings. I personally have horrendous performance in the official client with extreme fps yo-yoing going from 400-ish down to 30, then up to 250, then down to 15... OTOH, for me MTZ and idkr are both smooth as butter and enjoyable to use. YMMV, of course so experiment a bit. And seriously, try Crucial mod, it's great for weaker hardware 🙂