Hello,
Sorry, I can't reproduce the issue on my system. Please try the purge and reinstall steps as mentioned here : https://forums.stardock.com/485856/cursorfx-support-faq#reinstalling
Just make sure to re-download the latest version from your account. Reboot after the purge. Reinstall the latest version of CursorFX, best, do not change the default location. Reboot again and retest.
I notice on my system, the Cursor, for the secondary account, will initially be at the default Windows 10 cursor theme. But, once you set the cursor theme for your secondary account. It should stick with that theme including the size. Just that when changing between account, it will take sometime, few seconds, for CursorFX to load the selected theme and size it.
Try the purge and reinstall steps and report back.
Thank you,
Basj,
Stardock Community Assistant