iMac so running slow
I have a Mid 2015 iMac Retina 5K 27 inch mac OS Big Sur 11.7.10 Memory 8GB 1600 MHZ
My problem is it takes so long to bring up most any site or app, it churns. My iPad is very quick. I use my iMac daily and would like it to be faster. Do I need a new iMac? Will an iMac mini work with it? I do not do any graphics and stream very little. Streaming works once I get to the site. (For example:watching a golf tournament or basketball game). I love the 27 inch monitor. Thank you in advance for your kind response.
iMac 27″, macOS 11.7