How to improve Performace?

Right now the when I click play or when I skip ahead on a video, it take a while for the video to start playing. This is on Roku ultra and Samsung 8000 series TV. The delay is not too long, maybe like 5 seconds for DVR show and around 7 to 10 seconds for movies (BRD -> compressed MKV). It is perfectly acceptable but I wonder if there a way to increase the performance? A beefier CPU? better network connection? better or more powerful client machine? or any tweak in the PLEX server setting? Any ideas?

Server is running on a i5 Haswell gen “S” series CPU, wired connection to a pretty powerful ASUS router and both Roku and TV are connected wirelessly over the 5GHz channel.

TIA

What year is your Samsung?
Hardwired is always better if possible.

I have a 8000 series Samsung last year’s model and it’s hardwired and nearly instantaneous for fast forward and rewind. I mostly use DVR content but also 1080p br rips and lower def stuff and still under 2 seconds.

Can’t speak for Roku but my Chromecast on 5G wifi is unbearable…

Get true 1Gig hardwired and see.

@Overblod said:
Server is running on a i5 Haswell gen “S” series CPU,

Too generic. You’d need the precise model number of your CPU to make an assessment.

@OttoKerner said:

@Overblod said:
Server is running on a i5 Haswell gen “S” series CPU,

Too generic. You’d need the precise model number of your CPU to make an assessment.

Intel Core i5-4570S Quad Core 2.90GHz Haswell CPU 5.00GT/s 6MB SR14J FCLGA1150

@nokdim said:
What year is your Samsung?
Hardwired is always better if possible.

I have a 8000 series Samsung last year’s model and it’s hardwired and nearly instantaneous for fast forward and rewind. I mostly use DVR content but also 1080p br rips and lower def stuff and still under 2 seconds.

Can’t speak for Roku but my Chromecast on 5G wifi is unbearable…

Get true 1Gig hardwired and see.

Samsung TV is 2016 model. I was leaning towards connection speed too…I will try wired connection and see how it works.

What kind of hardware is your server running on?

Nothing special at all…

@Overblod said:
Intel Core i5-4570S Quad Core 2.90GHz Haswell CPU 5.00GT/s 6MB SR14J FCLGA1150

https://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i5-4570S+%40+2.90GHz

That should be good enough to transcode one movie at a time when you use the full quality from a BluRay and PGS subtitles are activated.

If you don’t use subtitles and your files are compressed to max. ~ 10 mbps bitrate, this cpu could almost handle 3 streams at once.

Performance was possibly degraded when the updates were installed which were supposed to mitigate the ‘Spectre’ and ‘Meltdown’ bugs in CPUs. https://meltdownattack.com/