This message means that one of the dsps is overloaded. It can have a number of different causes.
It would be helpful to know whether it happens with particular presets. It can (rarely) be caused by a hardware fault on one of the dsps, so it
would be helpful to know the loaded presets in both dsps.
An unstable clock from an external sample rate sources can also cause this problem, so we would need to know what if ny external sources you are using. Does the problem occur when using an internal source ?
So, information, information …