I can not see any problem on your screenshot.
Canvas is always different but Plugin is repeated frequently.
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I tested FingerprintSwitcher by running a thread repeating, applying a new fingeprint each time.''
I logged the info shown in F.Vision for each run.Found that canvas is always different but plugin is repeated frequently.
So why do we need PerfectCanvas? Is Plugin a concern instead?

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I think this result reflect the average of real browsers appropriate as many (Chrome) users are surfing with the standard (pre-installed) plugins and therefore the fingerprints for the plugins are the same as it should.