Hi, I have a ultrawide monitor with 3440x1440 pixels resoution and freesync feature (SAMSUNG LS34J550WQUXEN). It is paired with MSI Gaming Radeon r9 380 graphic card. If I enable a freesync my resolution was change to 2560x1440 and i can't switch to my previously resolution 3440x1440. I use HDMI cable. Where is the issue?