OK, we might need to subdivide this issue yet again because there's also two things in here that we could be talking about.
The issue that affected mouse input, the one that we think we have improved/solved, also affected keyboard input. That would be conceivably consistent with what you are describing, if so this may also be solved.
To know if the issue is the other thing that I was mentioning in my post (i.e, you find friction is just too low), during the next test, start a custom game pasting this in the Commands field:
phy_surface_friction: 20;
phy_accel_ground: 20;
This is going to make you super grounded, pinning you to the ground as soon as you touch it, kinda like Super Meat Boy. It's an extreme so you can see if that's at the root of your feedback. The ground acceleration is increased in this example to compensate for the increased friction, the value is not exact to keep things as they were, just ...
Read more