Tested with a movement speed calcuation script.
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I finally made a movement speed test on a complete flat 1020x1020m map.
I tested two different builds
(0str/30str) with different carry weights
(10/20/30/40/50/100).
carry weight= 0.0kg 10.0kg 20.0kg 30.0kg 40.0kg 50.0kg 100.0kg
0str 0agi= 3.49m/s 3.39m/s 3.31m/s 3.25m/s 3.20m/s 3.16m/s 3.02m/s
30str 0agi= 3.44m/s 3.35m/s 3.28m/s 3.22m/s 3.17m/s 3.13m/s 3.00m/s
carry weight= 0.0kg
0str 30agi= 4.08m/s +10ath= 4.98m/s
30str 30agi= 4.08m/s +10ath= 4.98m/s
The strange thing is, that strength actually lowers the speed if it has a higher value than agility.
Only if strength is on the same level as agility, you wont get any speed penalty from strength.
But now lets take a look on how much strength reduces the speed penalty from weight.
carry weight= 0.0kg 10.0kg 20.0kg 30.0kg 40.0kg 50.0kg 100.0kg
0str 0agi= 3.49m/s -0.10 -0.18 -0.26 -0.29 -0.33 -0.47
30str 0agi= 3.44m/s -0.09 -0.16 -0.22 -0.27 -0.31 -0.44
As you can see strength has an effect on the movement speed.
It's not realy that much, but better than nothing.
EDITEach agility point increases the movment speed by
~0.6%.
(this is the base movement speed)Athlethics increases the base movement speed by
~2.2% per point.
Both wont effect the turning speed.