Your findings are really important especially considering I cant get into the plane for long hauls massively regularly (and to be honest my enthusiasm is low to fly this), due to the WASMs I experience about 90% failure rate on this bird.
V1.0.10 was good, really stable but V1.0.11 is back to the same old same old. Mine is the same, very much around the 4-6 hour range where it'll WASM. So please do report back!