Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email email@example.com.
You can leave you modules the way they are and speed up your Magento site by adding our LightSpeed or Speed Booster modules. Lightspeed is a page caching module that can reduce response time to as low as 120 milliseconds.
You may recheck your magento hosting, probably it’s the main reason. Make sure that your hosting has enough hardware resource for your ecommerce business. You may review this article to find a good magento hosting