Well there’s been many discussions regarding this topic, some are quite detailed - so perhaps you missed this one?
In-app lag won’t result in a laggy exported video
If your video is choppy before you do any editing or add any filters, then your PC is just not up to the job (not all PCs are suitable for video editing). If you are adding filters, then in preview these are applied ‘on-the-fly’ which is very CPU intensive and frankly your laptop’s APU is really underpowered.
