No decent inbuilt download manager... Tried to use Metamask, Phantom wallet add-ons using custom add-ons collection but Metamask won't even load, on phantom wallet can't tick on I accept, on Polkadot js add-ons I have to add wallet every time I reopen the browser... Also if I open any extension there is no way I can add it on a tab or close it except for going back no matter how many pages I have visited, I have to click back that many times to exit from the extension... Also not smooth...