Not only the Moskva, all the folders with old design Deckel Compurs. I own a Rodenstock Citonette : a 645 folder dated 1934, with 75mm/2.9 lens mounted on such a shutter and am often disappointed with pictures taken at 1/250, even when holding them in my special way, with both hands - 1/100 and lower speeds seem OK.
And I agree strongly with this :
I had several folders which I had to adjust for this !be absolutely certain that the lens and shutter is parallel to the film. I've seen a many that it ever so slightly isn't completely parallel and makes both ends slightly out of focus