|Just saying that means very little.|
Has the print quality on those settings become worse than it used to be?
If so, use the nozzle cleaning utility in the printer driver software.
If the print quality has always been like that and it isn't good enough, buy a better printer from the top three manufacturers (Canon, Epson or HP). Brother printers are not the best choice for good print quality.
Also consider using better quality paper. You'll never get the best quality output using cheap copy paper if that's what you are currently using. High quality inkjet paper is best.
message edited by phil22