That should be at least 15C too high....
Make sure you don't use too much thermal compound, spread it (with a scotch-taped fingertip) thinly to within 1 mm of edge of heat shield, and, make sure pump is locked/tightened evenly at assorted corners/sides, so not tilted slightly...
check temps at idle...
my own 7700k (Noctua NH-D15, XMP/MCE on, all 4 cores at 4.5 GHz during activity) runs about 29-30C at idle, with temps fluctuating from 40c-56C during a Defender scan, and 64C during Battlefield 1 gaming, and 73C during Prime95/small FFTs ...
If temps go to 95C instantly, I'd almost have concern over whether or not the pump is even operating...; does the radiator get warm at all?