Lineart problems
Hello I run photoshop cs6 (will be upgrading to cc soon) I have run into a problem that I have googled, youtubed, and read tons of forum post with no satisfactory answers. And hope the community here can help.
Its a pixelated line problem with my lineart, but seems to be very different from all other posts on the topic I have found. Let me start off by running through my set up ect. I use a Parblo a610 Tablet, I am new to digital artistry but not new to drawing (pen and pencil work mainly) I set my canvas to a size of either 3000x3000 or 5000x5000 with a dpi of 300. I use the first two brush presets (soft and hard) with the spacing set to 1% smoothing on and shape dynamics on.
Now the problem, on my usual pc screen which is hd around 28 inch the lineart (anime) looks flawless no stutter, jitter or pixelation. However when I view it on my larger screen also hd but around 40 inch I notice a serious amount of pixelation on my lines as do my friends who have viewed the image (three different rigs and screens) when viewing the image at size or zoomed in on any of these screens the pixealtion goes away (weird huh) yet when I zoom out to fit page or change image size to what the finished product size should be (1280) the pixelation is terrible around certain edges.
Usually I will sketch an image out in a light colour and then use the pen tool to create the finished black lines on a separate layer, I have also tried this free hand (yes my hand is quite steady) and get the same results of pixelated lines/edges, I have gone slow and methodical and done quick stroke lines all with the same results. I feel I must be missing something here and any help on resolving this would be great. Now my lineart and digital art is not up to scratch on what I can do in real life with a pen and paper as I am new and still learning but this is driving me insane and feel I can't progress until I have resolved this pixelation issue (yes I am OCD as hell) I will also post said image that has given me the worst results to date.

Above image done at 5000x5000 with dpi 300 using a hard brush set to 10px smoothing, shape dynamics, and spacing at 1% final outside lines created with the pen tool. When uploading to forum it said it would squish this down to 900x900 (I think
) but hopefully you can see what I am talking about.
Thanks in advance for taking the time to read and hopefully answer.
