I can't speak for the Suntour fork. Is this your bike?
Designed with trail-friendly geometry, Stance E+ helps beginner or intermediate trail riders experience off-road E-bike riding at its best. Its lightweight, strong and stiff ALUXX SL aluminum frame with FlexPoint suspen...
www.giant-bicycles.com
Spec components look pretty decent for that price point. Looks like you can also increase travel to 140mm (internal adjust). I can only speak from personal experience but the fork makes a lot of difference in how the bike feels, performs and really, how it connects with you. I really hated this bike on the first parking lot test... could not lift the front end at all to manual. After the switch to Pike, the front pulls up like my enduro bike despite the long chainstay (has to do with more responsive fork and weight).