Always crashing on jump_vampires_v4

[Dave]

I get a weird crash on jump_vampires_v4 jump 9(?) when trying to do the map on demo. The game crashes to desktop as soon as I put the 5th sticky in the water. This happens both on tempus as well as offline.   
4 stickies don't crash but cause heavy fps loss and I can't make the jump with just 4. Anyone got an idea how to fix this? Thanks!

[Kattocate]

not sure if this helps but i tested myself and was able to place 8 consistently without any errors so it surely isnt a map problem

[Daelin]

i have the same problem. Just tried to do that with default config the same happens.
edit: try mat_drawwater 0 it helped me http://prntscr.com/ts2o8q

[Dave]

Thanks for the tip with disabling water, that helped.  Only 6 more T4 maps left now...