2024 Stunned Condition Does Not Prevent Movement: Errata or Intended?

Quote from AntonSirius >>

Quote from etCharion >>

If you are stunned, you move normally, but if you save it, you move only half movement.

 

Stunned by Stunning Strike : move up to your Speed, but can't take a Dash action = Speed x 1
Not Stunned: move up to half your Speed, plus your full Speed as a Dash action = Speed x 1.5

 That's not correct, Dash doubles the speed you can move in the round AFTER modifiers. If you are at half-speed, your dash is also halved... You don't actually move when you "dash", dashing now simply doubles the amount of movement you can take as part of your move. Here's the explanation of Dash from the PHB...

"When you take the Dash action, you gain extra movement for the current turn. The increase equals your Speed after applying any modifiers. With a Speed of 30 feet, for example, you can move up to 60 feet on your turn if you Dash. If your Speed of 30 feet is reduced to 15 feet, you can move up to 30 feet this turn if you Dash."

In 3.5 one could move, then spend their action of take a second move (called a double move), the nomenclature changed a bit in 5e to move + dash (that dash was a second move), but this changed yet again in 5.5e. Now, dashing doesn't involve any movement, it simply doubles how far you can move when you take your move.

Quote from HarmAssassin >>

Quote from AntonSirius >>

Quote from etCharion >>

If you are stunned, you move normally, but if you save it, you move only half movement.

 

Stunned by Stunning Strike : move up to your Speed, but can't take a Dash action = Speed x 1
Not Stunned: move up to half your Speed, plus your full Speed as a Dash action = Speed x 1.5

 That's not correct, Dash doubles the speed you can move in the round AFTER modifiers. If you are at half-speed, your dash is also halved... You don't actually move when you "dash", dashing now simply doubles the amount of movement you can take as part of your move. Here's the explanation of Dash from the PHB...

"When you take the Dash action, you gain extra movement for the current turn. The increase equals your Speed after applying any modifiers. With a Speed of 30 feet, for example, you can move up to 60 feet on your turn if you Dash. If your Speed of 30 feet is reduced to 15 feet, you can move up to 30 feet this turn if you Dash."

In 3.5 one could move, then spend their action of take a second move (called a double move), the nomenclature changed a bit in 5e to move + dash (that dash was a second move), but this changed yet again in 5.5e. Now, dashing doesn't involve any movement, it simply doubles how far you can move when you take your move.

 Technically, it doesn't double anything -- it gives you your current speed in additional movement. (The distinction matters when you dash more than once in a turn.)

But other than that, yes.

Quote from HarmAssassin >>

Quote from AntonSirius >>

Quote from etCharion >>

If you are stunned, you move normally, but if you save it, you move only half movement.

 

Stunned by Stunning Strike : move up to your Speed, but can't take a Dash action = Speed x 1
Not Stunned: move up to half your Speed, plus your full Speed as a Dash action = Speed x 1.5

 That's not correct, Dash doubles the speed you can move in the round AFTER modifiers. If you are at half-speed, your dash is also halved... You don't actually move when you "dash", dashing now simply doubles the amount of movement you can take as part of your move. Here's the explanation of Dash from the PHB...

You are correct -- for some reason I had in my head that Stunning Strike affected movement, not Speed

Still, that just means they're level in terms of movement available on a pass versus a fail (not accounting for potential Bonus Action Dashes and such, as jl8e noted), with the fail carrying a lot of other bad consequences