The speed is in a float because of the decimals. What you have to do is..
2. Target Requiem.exe when ingame.
3. Take off ALL amour and weapons.
4. Put on a sword and search for 1.5 in float type.
5. Take the sword off and search for increased value.
6. You should have the value by now. It will show up in the left hand window. Change the value to whatever(.1) and enjoy.
(Think it works? Based on the other speed hacks it should..)