Photoshop 2025

My photoshop windows is almost inposible to use. Before i update it to the resent 2025 version the screen would go all burred (out of focus) when i touched a key on the program. Since the down load hoping this would resulve the problem, but now as soon as i touch the keypad or mouse the screen blacks out flickers for a second then its ok untill i touch another key. What happening? Cheers