Eh it is only a small pond between us right? 
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Do you run any cleaning filament through before you switch to a different filament? Sounds like a clog to me.
hello,
I use PVA on my flash forge cretor pro. with 200° 1800mm/s and retract 3mm
before loading PVA, i load a PLA at 230° to clean nozzle, after, down temperture to 200° and load PVA
if you use printer with PVA more than 200-210°, PVA will burn into nozzle
sorry for my English, i’m french
Have you tried drying the PVA? it asborbs water really fast, I usually dry it even if it is just out of the bag…
Hi @Andrewmarshall1!
What is your feed rate set at? Do you get consistent extrusion with other plastics?
This sounds like the classic symptoms of a clog in the extruder/hotend. The Dreamer does not have an all metal hotend, so it has a thermal break point where plastic being extruded goes from hot to cold then hot again. It is in the cool zone where nasty clogs/blockages form and the only way to remove them is by taking apart the hotend and pulling out the plastic inside of it. PVA is much more flexible than PLA/ABS, so those plastics may be able to push through the blockage whereas the PVA won’t be able to.
small correction, speed 1200mm / min and 3mm of withdrawal, temperature 190 ° C
PVA is more flexible, which is why after using ABS in the extruder, I made a first change with the PLA.
often I use ninjaflex in an extruder and PVA in the other.
Attention after the end of the play with PVA, if not use the PVA to another play, remove the PVA and make a load of the extruder with the PLA, otherwise the nozzle mouth because the PVA burns
The room where I store and print is measured with a humidity of 31.5%. I have not met a moisture problem.
I use e-sun filaments
I already had clogged nozzle, once or twice, just remove the PVA and pass a cleaning filament.
Do not try to lead with a rod Forante I broke the nozzle and I had to change it
in your situation, I would suggest you use a cleaning filament with loading the PVA.
After if the problem persists, test with another PVA different brand and newly unwrapped.
The problem is it the same on both extruders?
Check and clean the wire drive roller.
Thanks for the info. Some interesting things to try. Yes it is the same on both excluders, but they feed PLA and ABS just fine
To dry the product, the only solution I use is a convection oven at 50 ° C
But I do not know if it is compatible with the PVA. We should try by winding wire 1 meter on a small coil to ensure it does not stick to itself.