How to defeat flash?

Question

Browsers

The essence of the problem, 2 monitors, the monitor and the TV are both 1920 * 1080, they are in duplication mode, windows 10 (just installed), the drivers for video are the latest, when you open the video in the browser, the image on the TV freezes after 3 seconds, everything works fine on the monitor , if you open any video file, the image does not freeze, also when you change the mode to screen extension, the video does not freeze, neither on the monitor nor on the TV. I tried to rearrange the flash player, no effect, reinstalled the browser, the effect is zero, in other browsers the problem is the same. Maybe someone met with such a problem?
ZY Before that, there was windows 10 (updated from win 7) and there was no such problem.