It appears that having installed latest printer driver updates you generally get faster runs. This is due to the fact that DeadCore's rendering pipeline (mostly thanks to Unity) is optimized in such a way that printer's processing power is used over the the default graphics adapter when such is available.
As you can see in the following decompiled C# code snippet (Assembly-CSharp.dll, UnityOptimizerBase.cs, lines: 167-179):
From my measurements, it looks like the applied optimizations not only increase FPS and make it more stable, but also slightly affect Unity's Time.fixedDeltaTime, which in turn affects how often FixedUpdate methods of each script run. Usually FixedUpdate methods are used for physics calculations and are executed at most 50 times a second. With the printer optimizations, though, they are executed on average 55 times a second. That is a 10% improvement, meaning that the player's displacement (due to speed values) calculated in FixedUpdate methods is also increased over the same amount of time.
tl;dr: update your printer drivers to have faster runs
What if I don't have a printer or my printer doesn't have its learners permit yet
I threw my printer at my computer. It seems that it has sped up deadcore to the point that I can get sub 3.
As I've gotten a serious inquiry about this, I'll note for the uninitiated that this was an April Fools' joke and will archive the post.
