Hi-res yet deleted as low quality - Forums

Ultrawide	16:9	16:10	4:3	5:4
2560 × 1080	1280 × 720	1280 × 800	1280 × 960	1280 × 1024
3440 × 1440	1600 × 900	1600 × 1000	1600 × 1200	1600 × 1280
3840 × 1600	1920 × 1080	1920 × 1200	1920 × 1440	1920 × 1536
	2560 × 1440	2560 × 1600	2560 × 1920	2560 × 2048
	3840 × 2160	3840 × 2400	3840 × 2880	3840 × 3072

Wide	Ultrawide	Portrait	Square
All Wide	All Portrait
16 × 9	21 × 9	9 × 16	1 × 1
16 × 10	32 × 9	10 × 16	3 × 2
	48 × 9	9 × 18	4 × 3
			5 × 4

Alright, this is not a contest to the deletion of a wallpaper, more like a question.

Earlier today I uploaded a picture of a nude model from foxes.com in the highest resolution available on the site, yet it has been deleted as low quality, with the added advice to "lower the resolution". Upon further inspection, it does seem the full res pic was blurry when viewed at 100% zoom (I have a small monitor, sorry !)

I did and the new upload seems to have passed. the main question is : should I keep uploading the pics from that site in their native resolution (4000x2661); even though it seems foxes.com does some kind of upscaling of their own images at the risk of making them blurry, or should I lower the resolution to 3000x2000 which seems to cancel the problem ???