laurenlola22 That's great to hear. You can try other similar refresh rates if you want: 59, 75, whatever is listed as supported would be fine to use.
You can also enable vertical sync in the game's graphics options, or in the Nvidia Control Panel. For the latter, right-click the desktop, select the CP, choose Manage 3D Settings > Program settings, find TS4_x64 on the list, scroll down to vertical sync, and choose On or Adaptive. If you switch to DirectX 9 mode in the future (you shouldn't have to, but just in case), you'd need to apply the settings to TS4_DX9_x64.
The "best" combination of settings is the one that works best for you, so feel free to experiment until you get what you want.