Apparently all video in 1080p goes struttering.. hardware limits it's been reach?

Nope at 1080p you only have 60fps

[youtube] tk5AKQPhSv4: Downloading webpage
[info] Available formats for tk5AKQPhSv4:
format code  extension  resolution note
249          webm       audio only tiny   56k , opus @ 50k (48000Hz), 22.45MiB
250          webm       audio only tiny   71k , opus @ 70k (48000Hz), 28.17MiB
140          m4a        audio only tiny  133k , m4a_dash container, mp4a.40.2@128k (44100Hz), 60.43MiB
251          webm       audio only tiny  139k , opus @160k (48000Hz), 53.45MiB
278          webm       256x144    144p  127k , webm container, vp9, 30fps, video only, 40.00MiB
160          mp4        256x144    144p  129k , avc1.4d400c, 30fps, video only, 42.17MiB
133          mp4        426x240    240p  274k , avc1.4d4015, 30fps, video only, 93.30MiB
242          webm       426x240    240p  287k , vp9, 30fps, video only, 74.39MiB
243          webm       640x360    360p  495k , vp9, 30fps, video only, 122.63MiB
134          mp4        640x360    360p  646k , avc1.4d401e, 30fps, video only, 189.58MiB
244          webm       854x480    480p  937k , vp9, 30fps, video only, 195.81MiB
135          mp4        854x480    480p 1220k , avc1.4d401f, 30fps, video only, 347.72MiB
247          webm       1280x720   720p 1877k , vp9, 30fps, video only, 334.00MiB
136          mp4        1280x720   720p 2453k , avc1.64001f, 30fps, video only, 664.49MiB
302          webm       1280x720   720p60 2949k , vp9, 60fps, video only, 503.25MiB
298          mp4        1280x720   720p60 3796k , avc1.640020, 60fps, video only, 903.21MiB
303          webm       1920x1080  1080p60 4658k , vp9, 60fps, video only, 669.26MiB
299          mp4        1920x1080  1080p60 6472k , avc1.64002a, 60fps, video only, 1.61GiB
18           mp4        640x360    360p  529k , avc1.42001E, 30fps, mp4a.40.2@ 96k (44100Hz), 247.22MiB
22           mp4        1280x720   720p 1551k , avc1.64001F, 30fps, mp4a.40.2@192k (44100Hz) (best)