When you create question single grid, if you use question layout Page.
It will use scroll page default, if you want to change speed.
Please change CSS in layout questionnaire.
Advanced - Survey - Layouts - Search layout name that you are using - Open - Tab Layout detail - Style sheet
Search CSS:
- if it really existed, please change number in css code (ex: 800)
.question_layout_paged_mobile .cg-ui-answer-option {
--smooth-scroll-duration: 800;
}
- if it doesn't exist yet, please copy code css bellow, paste in tab Style sheet and save. Please change number in css code if you want (ex: 800)
.question_layout_paged_mobile .cg-ui-answer-option {
--smooth-scroll-duration: 800;
}