RX 460 4gb STRIX crashing

I have rx 460 4gb strix connected to TCL tv via HDMI. It worked fine untill this afternoon, now it wont display in 1080p, only 1360x768, and if i switch to 1080p it deviates picture totaly. IT works fine when connected via DP to monitor, and TV works fine when same HDMI port is connected on other PC with 980ti strix . All drivers are up to date. Hell, it happened just after win10 did update on turn on.

Help?