Enable function scaling in docker swarm

I'm looking for a way to scale appwrite running selfhosted in docker swarm. According to the benchmark guide https://book.appread.io/benchmarks#docker-swarm
appwrite running in docker swarm can have only one executor and appwrite-worker-functions container and they both have to run on the same node. Which makes functions basically only scale vertically when running in docker swarm.

I have gotten suggestions that modifying the OCR image might help with this:
From @Binyamin
"There's a small challenge you'll need to overcome when deploying Appwrite into Docker Swarm as Appwrite uses OpenSwoole in-ram table for managing the running functions containers
...
That said 1000-2000 rps mean 3,600,000 - 7,200,000 and Appwrite should be able to handle pretty nice, but you'll need to either overcome and modify the ORC image or go with Horizontal scaling."

I think he means instead of swarm, just setting independent appwrite instances and set a load balancer to distribute the traffic between the instances, but not sure