My network connection does not seem to be good enough. I get lots of “loadings” on TV and sometimes the screen mirroring just stops.
Screen Mirroring from your Mac to your Smart TV is quite a heavy job for your home network. Lots of data is going from your Mac to your TV and it needs to be there on time. This is what you can do to increase the performance of your home network:
Restart your router. Just take out the power plug, wait 10 seconds and put it back in. This resets your router and will make your home network faster and more stable. Why this works? Routers are in essence little computers, with software. Software will have small memory leaks and some processes will stop working correctly over time. That’s why it is a good idea to reset your router once in a while. Our recommendation: once a week.
Don’t do network intense work while screen mirroring. As explained, screen mirroring is network intense. For the best performance, don’t do other network intense work at the same time. This includes making timemachine backups over the network and uploading/downloading large files from the internet while screen mirroring.
Put your Mac and your TV on the same router channel. Some routers (dual band) have create both a 2.4Ghz and a 5Ghz wireless network. For the best performance, put your Mac and your TV on the same network. Preferably the 5Ghz network. But definitely not the Mac on 5Ghz and the TV on 2.4Ghz, because that will negatively impact the performance of screen mirroring.
Use an AC or N router. Newer routers support Wifi AC and N. Older routers might only have Wifi B and/or G. B and G are not really up to scratch anymore for modern networking tasks, so go for an AC or N router. If your router supports AC and N, also make sure that your router is set to use either the Wifi N or Wifi AC networking.
Beware of the Microwave. This may sound silly, but microwaves interfere with Wifi. So, if you use your microwave to make popcorn when watching a movie on the big screen, prepare the popcorn before you start screen mirroring.
More tips on better wifi networking are here: https://lifehacker.com/5931743/top-10-ways-to-boost-your-home-wi-fi