Transpose problem in Gojira

Hello

Just downloaded the 14 day trial and I am having a problem with the transposer.

With the transponser active I hear my guitar twice - the downtuned one and the E Standard one.

I am using the Focusrite scarlett solo as audio interface - Direct monitoring is set off
and Reaper as my DAW (problem occurs in standalone aswell). Probem also occurs when using headphones.

Thanks in advance

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