Perhaps not right away, but you will eventually become annoyed seeing them constantly. Been there, done that.
For this reason, your primary issue is the viewing space/seating distance, not resolution per se.
Moving to a newer, slightly larger 1080p HDTV on sale- one with better picture quality/contrast/detail/black levels than you enjoy now is a better target vs 4K IMO. Maybe a 50" vs a 55 if possible to better suit your viewing space.
Start talking about upscaling Netflix content and you will most certainly receive at least a few snarky comments(!)
Yet another "to 4K or not to 4K" question, I know. But I think this is a very specific set of criteria causing my confusion, so, thank you for bearing with me.
Recently completed a little screening room in the darkest, quietest, sweetest spot in my NYC railroad apartment. However, it leaves me stuck with a <span id="INSERTION_MARKER">5.5 feet viewing distance (actually about 68"). With my 40" LCD it isn't bad. But the TV is old and I want to go more immersive. According to online charts and ratios, it seems 40" is almost pushing as big as I should go before I start to see pixels at this distance on the FHD screen. But I think I can probably get away with 50", or 55", FHD. Anyway, after one of these size/distance relationships, the advice goes, I'd benefit from 4K. And I understand that. But what about without the content, since it's basically still non-existent? Would upscaling blu-rays or 1080p media (or for that matter, less than 1080p, like typical Netflix streams) to a 55" 4K screen, viewed at 5.5 ft, look as good as 1:1 1080p picture on a 1080p screen - of the same size - at the same distance? Basically I'm wondering if I'll benefit from the extra pixels of UHD with upscaled content. I know it won't be a 4K-quality image. But will it look worse than 1080?
If folks think I could do a 50" or 55" FHD at this distance and not notice (or mind) pixels, I'd do that, because they're much more affordable, and I think I've got a few years before 4K and/or OLED really land within my reach.
Thanks for any advice.