toothbrush mentioned above that the limits may apply if you use Limesurvey’s hardware.

No limits if you self-host.

The limit you reached seems to be at odds with the Limesurvey docs.

I haven’t used Limesurvey recently to know if it works at large scale without restrictions, maybe someone else can weigh in.

How are you defining ‘large scale surveys’?

There were no scale restrictions on V1 when I used it, how is V2 restricted?

From the Limesurvey features page:

LimeSurvey 2.x currently offers:

Unlimited number of surveys at the same time

Unlimited number of questions in a survey (only limited by your database)

Unlimited number of participants to a survey