Portal 2 Custom coop maps

There are dozens of custom singleplayer and coop maps already. I have mad steady progress in copying, changing, implementing and running portal 2 entities.
Next on the list are moving trains/conveyors and ruttet spawners.
I also just have to tes strigger_gravity in combination with gels.

Compiling and running a custom map in coop or singleplayer is relatively easy I just helped a 12 year old to do it. What is stopping you?

Sadly i noticed that gels can run in coop, even with 20.000 gel particles in one room (wich is roughly 10 times as much gem as from one gel source), but as soon as you get too much gel into a tractor beam the game goes bad, gel flickers on some graphic cards, dripples out of the fractor beam in singleplayer or crashes in multiplayer.

Do not overuse gel sources that produce a lot of gel at a single time in combination with tractor beams in coop games. having all of the above in a singleplayer game never caused any problems, except for flickering gels, though.