Low fps after GPU upgrade

I bought a 5070 ti to replace my 2070 ti After installing it and updating drivers my fps dropped to 20 or 30 fps and fps will not go up or down by changing graphic settings in games I thought it might be a couple bottle neck but using a bottleneck calculator it says I should be getting about 100 fps I have tried ddu resetting the PC changing a lot of settings in Nvidia control panel and updated bios again nothing has worked please help