Screenshot of Netflix with "Default" setting, followed by screenshot of Netflix with "Larger" setting...
As you can see in the above comparison, "Larger" mode (the second image) is recommended when viewing Netflix on an HTPC. The Netflix tiles are much larger in this mode and more suited for viewing from a comfortable TV sitting distance.
Large tile mode can be enabled in Windows 10 if you go to:
Large tile mode can be enabled in Windows 8.1 if you go to:
Note: in Windows 8.1, this setting is different to the one found in Control Panel - i.e. it is not the same one found in Control Panel > All Control Panel Items > Display > Screen Resolution - so don't modify the settings there.