Are you using them at home? I've been using a G10 for gigs since 2017 and never had an issue. Range has been fine for a theatre-size stage and there's no cut out if I walk behind someone. Never had interference issues either. So I would say what you're experiencing is not normal, but perhaps there are too many wi-fi devices close by? The G10 has 14 channels which it scans through. The venues I'm playing have wi-fi but probably the routers are far enough away.