This might not be an optimal solution, It is possible to run the entire CerboGX operating system on a Raspberry Pi and I believe modern Raspberry pi out perform CerboGX in relation to CPU an memory. But this might be introducing new challenges by doing this. There are videos on Youtube about this.
I am curios to know, what do you mean by “reached the limits”. Was there a noticeable performance problem on the CerboGX? Do you think the CerboGX Memory or CPU was under too much load?
I’m a software engineer with prior experience with the Linux OS which the CerboGX is running on a variant of Linux.
However I am also having problem with NodeRed on my CerboGX (actually I have a Multiplus 2 GX which has similar capabilities to a CerboGX)