JohnnyBlaze,
I have investigated keeping the IXD2 at 200+ metres at 1 knot and have had no issue doing so.
The Crash Dive Blues! effect does carry over to the next dive. so if I order a crash dive, change depth before it completes and then immediately surface then the next time I dive I will most likly experience the Crash Dive Blues! issue. The way to remove it is to order a crash dive again.
If you are damaged then your crush depth is reduced and that means at depth you may be very slowly recieving damage which will result in flooding that may not be obvious by way of the flooding icon in the vrew management screen.
These are images from my testing of the IXD2 at 1 knot at 200+ metres.
