Fullboar 4 with DP8K Version 4.2.1 Issues

I'm on a show currently with a Fullboar 4 and 2x DP8K running Version 4.2.1. This is the first time I have used DP8K on this software, having not used them for many months. The experience with this combination has been awful. Every time I do a patch change I have to soft reset the node before it outputs aACN. The output window shows no levels until this is done. At one stage a whole block of the patch 100-odd channels were locked to a previously patched fixture and could not be over-written. The view by universe showed the fixture still there even though it had been unpatched. Cloning the universe showed the correct patch on the destination but the only way to fix the source was to remove the universe entirely and then add it again with multiple console restarts in between. Naming things in the midi mad causes delays of up to 30 seconds before the dialogue closes and the desktop frequently crashes and needs to be restarted during programming. I haven't experienced anything like this on this platform for years.