Magento 2.3.4 - After migration from M1 Category link and filtrable attributes takes too much time to load

My M1 site consists of 30k products and 100’s attributes. attributes like authors, edition, publisher, etc. After successfully migrated to M 2.3.4 if i click category links and left navigation filterable attributes to take too much time to apply filter. How to increase the speed of category links and ajax filterable attributes.