I was searching on how to make my phone faster and stumbled upon an old Reddit thread. I'm just resharing this information because this works for me on my S10 and I've also tested this on a Galaxy A50 and SO+ All credit to the original Reddit thread owner u/prandals
So basically what you want to do is go to settings and search for "Optimize battery usage" open it and select "all apps". Next search for "com.samsung.android.biometrics" and turn this off and you should notice an increase in unlocking speed right away. I also turned off the animation for the screen unlock in biometric preferences.
Hope this helps you guys.
Link to original Reddit thread