These are the system requirements for the latest 3 versions of Maple shown below. Maple 2020 was the last supported version of Windows 7. Now it doesn't mean it can't run on windows 7 just that if you're using Windows 7 with 2021 or 2022 any problems found in Windows7 but not in any of the listed requirement versions then it likely won't be fixed.
Not many people are mentioning slowdowns with their Maple 2022 or 2021 versions so I suspect they're all using the system requirement Windows 10 version. I have to ask, do most people find using Maple 2021 or 2022 with Windows 10 or 11 experience no problems in typing delays???