Clogged computer case GPU overheating, Crypto Mining, Dirty Case preventing air flow

I wanted to do a before and after of my computer case. My case was getting clogged with dust and lint. Cleaning out the vents on my computer lowered the GPU temps by 15 degrees Celsius.
Dust Can if you don't have a compressor
https://www.amazon.com/gp/product/B0000AE67M/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B0000AE67M&linkId=24100564c6241b34aa5e00626f9d5f9b