Two takeaways: yes, Strymon PSUs have a power ramp up challenge that affects some Singular Sound products. Many forum users previously reported this Aeros Firmware 5.0.x - #274 by persist affecting their Aeros.
As Support has stated, for optimal performance use the PSU that came with your BB2. Make sure the plug is firmly seated.
Good luck and hope you get everything up and running to your satisfaction.
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