Having used both Mac and PC, both feel solid to me. PC can be less stable simply because of the array of components available of varying levels of quality, but any build of decent quality parts will be as stable as a Mac. I use PC because that’s what I grew up on and Mac feels awkward to navigate, but that’s all personal preference.
I hear that Davinci Resolve has good video editing on par with FCP or Premiere Pro, maybe you could try that?