I got the same problem. First i thougt there was something wrong with my scripts, but even when starting some scripts from the workshop the engine suddenly freezes.

For example when i tried to write a player_move action and used c_trace to align my model to the ground - the engine freezed on the beginning of the test.
After some time (1-2 minutes) the engine works properly...but i don't want to wait 2 minutes everytime i start a testrun.

I never had any problems like this with other programs. Also i got newest drivers etc. I even deactivated my Antivir (it says acknex.exe would be a virus).

Funny thing: if i delete just the c_trace row from my script it works properly. But there is no syntax Error or else in that row. I even tried to copy the function from workshop 24. (The standalone script from workshop 24 works properly though)

Edit: Shooter-Template from AUM-91 freezes after a few seconds