wifi is on ..... but there is no connection to internet

hello again people
i want to ask about surfing the internet problem in beta 3
i already installed it and everything is good except FN buttons
anyway
my problem is simple .....
when i try to connect with the router everything going smooth
but after surfing the internet ... i lose connection to the internet suddenly
i saw there is no problem between router and laptop wifi connection ....... but i cant connect to the internet
the most confusing thing is there is no problem with other devices that surfing the internet via that router
so .... is there any patch for such problem like that now .... or didnt anyone face it until now
my wifi adaptor name is
RTL8723BE PCIe
and sorry to bother you
i want to ask about surfing the internet problem in beta 3
i already installed it and everything is good except FN buttons
anyway
my problem is simple .....
when i try to connect with the router everything going smooth
but after surfing the internet ... i lose connection to the internet suddenly
i saw there is no problem between router and laptop wifi connection ....... but i cant connect to the internet
the most confusing thing is there is no problem with other devices that surfing the internet via that router
so .... is there any patch for such problem like that now .... or didnt anyone face it until now
my wifi adaptor name is
RTL8723BE PCIe
and sorry to bother you