You should not be having transcode issues with anything less than four concurrent streams on that server. https://www.reddit.com/r/PleX/comments/1ae6683/intel_n100_vs_ryzen_7_1700_1st_gen_an_interesting/

It's likely that you have hardware transcoding disabled. Enable it, and these issues should go away. This forum post has good settings in jellyfin for an n100, https://forum.jellyfin.org/t-solved-correct-transcoding-settings-for-the-n100-processor

You should be able to find instructions for enabling hardware encoding in your bios by searching for it with your specific device model.

*edit

Handbrake does a bad job of explaining the difference between software encoding and hardware encoding. Or at least, it felt that way to me when I last used it. You likely were trying to software encode your videos, which, while theoretically makes the end result better quality, definitely won't be quick on an n100. You'll want to pick the option that has intel quicksync/qsv in it in order to get the most speed out of your handbrake encodes. https://www.reddit.com/r/handbrake/comments/z2m814/comment/kxu2a8x/

Do you have another system you can use? Maybe with a video card on it that can help with pre-transcoding files?

This is what I ended up doing on mine. Was a big hit to my electric bill to pre-transcode the entire library (only for files that needed it), but now everything serves up in a flash. And the script runs as a nightly cron to catch any new stuff.

If you have to, maybe just dedicate the system you have here to transcode certain problematic content. Other than finding another download in a different format, I’m not sure there’s anything else you can practically do.

I just wanted to let you know in case you didn't that your screenshot includes a profile picture

Downloading from where?

You get the content from blurays typically (you surely aren't talking about piracy)

I am asking the dude doing the transcoding why he's doing it. I am not waging a crusade against all dudes doing transcodings.

to answer your question, no, I don't, all media I got is 1080p and all my devices can display it.

I watch a bunch of weekly anime stuff myself. Never have to worry about transcoding with my devices (locally) and just directplay it. Unless I watch it remotely then it transcodes, I never mess with the default settings and it's fine.

My cpu is i3 8100 so I think you would be fine as well, unless it's multiple streams at once I have no reference for that.

not knowledgeable about them things but normal movies and shows with multiple audio streams and subtitles play just fine with directplay, selecting them from the client works fine, etc.

the only reasons I know of for transcoding would be if you have ancient clients that can't play e.g HEVC or something, or if you're on shitty broadband and it ain't feasible to stream 4K to a phone.

Especially anime often use the superior .ass subtitle format, which many devices don't support. Sadly Crunchyroll is switching to .srt which has broader support, so it likely won't require burning them in the video (transcoding), which is the only positive thing (still a shame imo).

https://www.reddit.com/r/anime/comments/1nuxuzs/crunchyroll_has_downgraded_their_subtitles

Subtitles force transcoding a lot of the time depending on playback situation and media. A lot of compatibility issues there - downloaded movies often will have the PGS subs from a bluray, anime can often have ass/ssa, ibx subs, etc plus they all tend to be embedded in the media (and in anime’s case often with extra fonts and attachments).

all of these (basically anything but external srt) can interrupt direct playback depending on users Jellyfin client. Some have better sub support than others, android vs apple vs some esoteric client like webos all have their own niche weirdness. You need to search what the best option is for each users scenario. Like for my users that have apple devices checking this box in settings>playback allows direct streaming of a lot of content:

But for “the problem show” what do logs say? How is it encoded? Quick sync can’t transcode everything. The older your processor the less it can do and niche formats it definitely can’t do at all. Like unless you have a real new cpu (13th or 14th gen) it’s not doing av1 or vp9 content and that’s still getting offloaded to cpu for transcoding. And if it’s some ogg vorbis thing or whatever it won’t work. And do logs verify igpu is being utilized for transcoding/mapped correctly? It can be a bit of a pain in the ass (unless they improved the process, it’s been a while since I’ve had to do it)