I got an report from one H3 user. SW v3.1.1 (2679)
H3 + 1 Mini wing + DP2000, 1 external monitor
He got a serious slowdown and assert failed crash when using record + choose. After crash only option was to turn off the console.
Open windows: cuelist, effect, output
He did an int effect for 50 channels and recorded it.
Desk channel int effect was running and he was doing an position effect for several movers (blind). At this point desk started to crawl and crashed when he hitted record + choose.
I'll try to get back with some more detailed info.