Games are constantly crashing off what to do?

My games are constantly falling off my games. Like Minecraft, Call of Duty (bo2 and Aw) as well as Fortnite (no matter if BR or Save the World). I use Windows 10 pro I have a Nvidea GT740 a Ryzen 1700x as well as 16gb Ram (single channel and XMP profile). Everything is up-to-date, no matter if BIOS, drivers or other. 2-3 days ago everything was still great. The games only load up in the settings or lobby view, immediately when I put in the game everything crashes and freezed. The CPU values are all normal, no overload or the like, as well as the GPU too.

What about the CPU temperatures? Is the power supply powerful enough?

the whole could otherwise be software-technical, but it is not likely:-)

In the last days any updates made?

malware sometimes tested?

Hardware checked for temp?

maybe you have played somewhere at the windoof settings?

maybe your virus program has problems with various games?