Hi @GOROMOZZO Does Netflix freeze or just not load, is there an error message? Have you tried other apps to see if there is any issue with your internet connection.
Anyway can you check that you have the latest firmware 1300.3 which was released November 2021. https://www.samsung.com/uk/support/model/UE49MU6470UXXU/ you could try reinstalling Netflix but may need to switch off at the mains for a few minutes before trying again. Netflix Troubleshooting here https://help.netflix.com/en/node/100242
If there actually is a problem with the wifi connection try Rebooting Router, another idea is to change the DNS settings. Go to Network-Network Settings-DNS Settings. Change from Automatic to to 126.96.36.199 or 188.8.131.52.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 4.0,Android 12 Official Version.
@GOROMOZZO: What happens when you select Netflix? Do you get any error messages?
To troubleshoot the issue please ensure the TV is connected to a Wi-Fi network via Settings > General > Network > Open Network Settings > Wireless, or check the existing connection via the Network Status option. If you're happy that the TV has a stable connection, press the Home button on your remote > Apps > Settings (cog in the top right) > Navigate to Netflix > Reinstall app. Let me know if this helps.