Hi @d_ch i didn’t want to say anything offensive, i just wanted to help!. well in my opinion and in our case after we tried many cache plugins the only one that make huge difference in compare with other plugins it was Swift Performance, ofc many thing depend on what plugins you have already installed as may someone could be incompatible and ofc how many plugins do you have installed, keep in mind that many many things can be done without plugins with hooks and filters, im telling that because at this moment as an eshop we have 35 active plugins and 28 plugins of them are official woocommerce plugins just to expand some functions like shipping, payments, product addons etc. many people for just simple things they install a plugin to do theyr work but this is the biggest mistake. also i recommend you to disable the image cropping size on wordpress media settings. and also if you optimize images before uploding them make some change like the screenshot below on the woocommerce product frontend settings, you can leave them uncropped and you can adjust the pixels as per your needs