https://www.youtube.com/watch?v=OVSQhiRiy7o

i was trying to find some reason to why its happening but only thing i found was that its happening when you have some "flash indicator" option enabled, i looked thru settings and i couldnt find anything like that

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i found out how to disable it, in geforce overlay you have to go to Settings/Performance monitoring and uncheck this thing

it took me a while to find it haha