Suddenly, display's refresh rate gone from 144 to 60hz.

[Perismaz]

Hello guys! I hope you are doing well!
I am sorry for my english in advance.
I turned on my pc in the morning and i noticed that the refresh rate has dropped from 144Hz to 60Hz. I tried all the possible ways i could think ( checked the nvidia panel, went to display settings through windows, updated the nvidia drivers, updated windows, restarting pc, shutting it down and then turn it on again ) but nothing changed. I have changed nothing since yesterday night, so i know that the cable (DP) is capable, the gpu (gtx 1080) is fine too. I have no idea what may fix this issue. I have not a single of what is wrong and how i could fix it. 

Display is a Dell S2719DGF.
Have you got any ideas? 
Thank you in advance.

[Perismaz]

15 minutes ago, Perismaz said:

Hello guys! I hope you are doing well!
I am sorry for my english in advance.
I turned on my pc in the morning and i noticed that the refresh rate has dropped from 144Hz to 60Hz. I tried all the possible ways i could think ( checked the nvidia panel, went to display settings through windows, updated the nvidia drivers, updated windows, restarting pc, shutting it down and then turn it on again ) but nothing changed. I have changed nothing since yesterday night, so i know that the cable (DP) is capable, the gpu (gtx 1080) is fine too. I have no idea what may fix this issue. I have not a single of what is wrong and how i could fix it. 

Display is a Dell S2719DGF.
Have you got any ideas? 
Thank you in advance.

Suddenly fixed after a lot of restarts. Have not a single clue why.

[jones177]

Just now, Perismaz said:

Suddenly fixed after a lot of restarts. Have not a single clue why.

My 49" LG TV is doing the same thing. 

I checked it after reading your post and it was at 60. I went into the Nvidia control panel and try to put it back to 120hz but it took several tries to get it to stick.

I think it is a driver issue.