can jot forms support the traffic to our forms on a peak (deadline) day/time?

We've built a custom of form for registration to a conference. We loved the additional flexibility provided vs e.g. google forms. 

I've been testing the forms, together with a colleague and so far the speed/responsiveness has been great. 

However, yesterday we opened the testing to some ~ 10 other testers in the team and the responsiveness has not been as great. We are worried that when reaching the peak/deadline for registration the forms would not stand the traffic. 

We are expecting 200-300 registrants, most of which will be registering in the span of a week, with a peak on the deadline date. 

Can you comment or provide advice?

Our servers should be able to support the amount of traffic. We do have some restricting with email notification. For malicious users don't allow only a certain notification to be send per hour.

To give you a better answer, can you please explain the type of form you will be using and other details that may help give you a precise answer.