The goal is to have the core IDX experience be available at no-cost. In the future, if you want extra capabilities like more powerful VMs or some extra special capability, those may be available for a charge. This is all theoretical, for we are not actively thinking about making any changes.
As for the slowdowns and speed, those are unrelated! We will see whether there was a large spike in traffic or something that caused this sluggishness, but my 10 second look at our logs doesn’t show anything problematic.
If you are still seeing slowdowns, do create a new thread with your workspace ID and we can dive deeper into it.
Cheers,
Kirupa