I have been having a problem with stringing on my 3D printer, so initially I increased retraction distance from 6.5 mm to 8 mm. Then I tried again, with the same issue, so I increased retraction speed and lowered the extruder temperature. Same problem. Over and over. After I did each of these, I have since decreased move speed, increased minimum layer time, put fan on full blast, and nothing has seemed to increase print quality.
I realize this is a lot of alterations to be making, but I'm not sure what to do next. I am using 1.75 mm PLA and a Monoprice Select V2.