Do wireless mice and keyboard get interference from wireless router or anything normally ?
I do not use wireless but curious for family sense they do.
It depends on the brand and model. The Logitech wireless gaming mice are basically interference proof. You can see videos on youtube with the lab tests they do to ensure that. I don't think any other brands are near that level, but maybe that has changed recently, and it doesn't necessarily mean the other brands aren't good enough in most cases.