The 4500 is fast.Thre are some apps that dont work well with android 9 but the app makers are catching up
 
	Install speedtest on your buzz and  check your speeds  
 
	You using 2.4 or 5? or hard wired?
 
	You might want to factory set and start over
 
	The remote goes to sleep when not in use and takes a few seconds to wake up before working properly