dem_speed 0.1 = crash

Hello, I've got quite long demo of my longjumps with showkeys, and on the end there is nice longjump for me, and I want to view it with 0.1 speed, but when I jump to the end using viewdemo and typing dem_speed 0.1 (0.25, 0.5 and 1 works, but I want slower) my CS crashes... The question is: Am I able to view a demo in 0.1 speed using viewdemo option?
Thanks for every constructive reply :dance:

I understand, thanks for reply, I know it's possible with playdemo, but it's long demo and I don't want to view all on 0.1 speed, only the 3 last seconds, lol. But of course thank you for reply :)

Use host_framerate.
The bigger it is the faster it is. To playback in slow motion use host_framerate 0.01.
If you want it even slower add more zeros like this: 0.001.