If you changed GPU to that computer for some reason, DDU previous drivers, clear shader cache and install new drivers. Make sure your monitor refresh rate setting in Windows is correct, that you have correct resolution setting in game, that you are not using Radeon Boost (lower resolution when you move mouse) and that you don't have RSR or FSR enabled.
To my eyes that looks like low resolution with some "dlss" technology at low setting or a low resolution texture.