CRM Instances Working Slow Complain Repeatatively

Many instances of Free Customer CRM is sharing a major concern or getting CRM Slow which ultimately looses their interested in using CRM.
They do believe the product is quite good and might be a right fit if we use it wisely. But only issues they face is getting it slow when required to use.
Instances such as
jigar.sangamcrm.com

d1578.sangamcrm.com

And many more will get all list worked out with team and post in this comment.
But i humbly request you to please let’s workout positively in this case.
If as a Partner we could do any troubleshooting part then teach us we shall check first and then get back to the customer.

As compared to their alternate CRM due to speed issues they are loosing interest.

@Dhaval - can you share on which action or on which time its getting slow?

@jaykumar @Aayush - FYR

On Creating Lead, on Global Search, On Entering an Opportunity or converting Lead into opportunity.
Also when creating quotation and fetching Local contacts.
Its keeps loading up…

While Saving any Leads, contacts, opportunities or fetching detals also url of

skytech.sangamcrm.com > it started happening for this url too.

Hello Sir,
We implemented some changes last night to address the slowness issues you reported. Please monitor the system’s performance today and notify us if any additional problems arise.