Is there a maximum number of instances that can be run in parallel on sorry cypress for smooth execution?

[vpkhachane]

I am executing script on sorry cypress parallel. Presently running 8 instances parallel. But scripts failure rate is high. Same is working fine with 4 instance execution.
Need assistance

[agoldis]

Should be good with dozens, depending on the underlying infrastructure.

scripts failure rate is high.

What do you mean?

[vpkhachane]

thank you @agoldis Can you suggest for following system where currently i am running scripts

scripts failure rate is high. mean many scripts getting failed but same scripts working good when run with 4 parallel instance execution

[agoldis]

what scripts? Do you mean tests?

[vpkhachane]

website test scenarios ex login, registration etc.

[agoldis]

it doesn't depend on sorry-cypress, it depends on your tests internals and the machine's configuration.,

https://docs.cypress.io/guides/getting-started/installing-cypress#Hardware

[vpkhachane]

What will be the recommended max instances for the above-mentioned system to run tests parallel successfully ?