Hp laptop bc414nq freez/lag on windows10 intel uhd620 and nvidia gtx 1050 4gb

[johnnymxb]

This system has an intel uhd 620 and nvidia gtx 1050 4gb and ssd hard.
The big problem is when i set DUPLICATE/CLONE display of laptop (1920x1080 60hz full hd) to tv(1920x1080 60 hz full hd): in that moment when i try play videos from computer or youtube it starts lag/freez for 1s at 10-20s and is annoying. What it is interested, if i put out hdmi cable, it works perfectly.
-I have changed hdmi cable with another. It doesn't work.
-I have tried install a fresh windows10 build 1709,1803 or 1809. Is the same problem in any versions. The drivers are up to date.
It doesn't works.
-I updated bios up to date. It doesn't works.
-I have installed drivers for intel hd and nvidia from product site. I have installed drivers from hp site. I have updated drivers from device manager. It doesn't works any method.
-I have tried to priority nvidia graphic and set maximum performance from nvidia control panel. I set maximum performance and for intel from intel graphic settings. It doesn't works.
-I set maximum performance in windows power options. There i set all to maximum performance. It doesn't works.
-I have put out the charger. In batery mode is the same problem. It doesn't works.
-I have tried to disable each graphic card. When i disable nvidia, i observed that intel graphic goes only for laptop display, it can' duplicate/clone for tv. I don't know if it is normal this.
-When i disable intel, nvidia graphic goes on laptop display and tv, it can duplicate/clone. On display tv it works perfectly, but on display laptop it shows lags permanently on videos.

I don't know what to do. I am disperate. I can't see a movie without lag/freez. Please help me. Thank you.

 

[johnnymxb]

Now i have constated something very strange for me. The laptop is working perfectly ok. When i used microsoft edge to watch movies, it was no lag/freez on both display. When i used microsoft movies & tv app to watch movies from hard they go perfectly on both display with no lag/freez.

So there is no hardware or driver issue.

I always use firefox and kmplayer. I don't like microsoft edge and movies & tv apps. On both apps firefox and kmplayer is lag/freez on both display. What can I do?