Keyboard turning speed too slow

[BSzili]

This is related to #140 but perhaps more easily fixable as a stopgap solution. The the keyboard turning speeds in TFE seem to be slower than the original DOS game, both the base and the "running" variant. I first thought this to be a timing issue, but the rest of the movement feels in line with the original game.

[luciusDXL]

I need to look at the original speed again.