Heya IraqĊanada!
The task manager thing is just a bug with the way it displays in windows. Don’t worry about that. Can you reset your video driver settings and in game settings and see if that helps? It may be a vertical sync setting or something like that rearing its head.
If you’re still having trouble after this troubleshooting, please generate a text copy of your DxDiag using these instructions. Once you have that made, open the file. Copy the code below, then copy/paste everything from that DXDiag file between the rows of tilde (~) marks where it says “DXDiag goes here.”
~~~~
DXDiag goes here
~~~~