Failed by timeout in House Price Prediction challenge

FHE Challenges
1

I tried to submit for this House Price Prediction challenge using this config.json:

{
  "indexes_for_rotation_key": [
    1,2,4,8,9,10,11,12,13,14,15,16
  ],
  "mult_depth":11,
  "batch_size": 128,
  "enable_bootstrapping": false
}

I used OpenFHE C++ and tested my work with the FHERMA validator. It gave this result:

{"compilation_error": null, "testcases": [{"scheme": "CKKS", "runs": [{"result": [75862.25830016276], "expected_output": [91100.0], "time": 4.396854400634766}]}]}

but when I submitted this in the system I got “failed by timeout”, I am not sure why, is the 4s inference still too slow, or any other issues in my code? how do I debug it as the FHERMA validator said there is no compilation error?

I run on Intel Xeon W-2235 Hexa-core (6 Core) 3.80 GHz Processor and RAM 48 GB.

Thank you!