/diy/ - Do It Yourself

I might just be retarded/impatient, but I'm pretty new to 3d printing, just bought an Ender 3 V3 KE. I'm pretty happy with it overall, and I've been getting pretty decent results with most prints out of the box, haven't had to tinker much with it at all.
One thing that I'm kinda confused about is print times. For example, I need an ice bucket for my freezer and I thought like "oh PLA is food safe I'll just print one" so I drew this up in solidworks and I'm kinda disappointed that it says it'll take 7 fucking hours to print on the default low quality settings. I really don't care much about quality in this case, but it seems like every setting I change just takes off a couple of minutes.
I get that it's a really big print, but all the sides are only 1mm thick. You'd think it wouldn't take so long at 300mm/s
Any thoughts?