New Macbook pro (2018) feels slow

I too just purchased the same MacBook Pro 15" 2018 MR942LL/A (2.6 GHz Space Gray) with 560x. I feel that it is very sluggish compared to my late 2013 MBP. It seems to be an issue with the Iris 630 GFX. When I manually switch to the 560x by turning off "Automatic Graphics Switching" in Energy Settings, the laptop seems and feels more responsive.

No one can diagnose the underlying reasons for "sluggishness" from a YouTube Video. If you think your Mac might have a problem, download and run this little "discovery" Utility named etrecheck and post its report, as BobTheFisherman suggested above.

User Tip: Using Etrecheck

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mzaken wrote:

Yea I tried it too, it feels less sluggish but still sluggish and not smooth.

Try to open Youtube on chrome and resize the window it doesn't work properly.

Does this issue occurs on other 2018 Macbook Pros models? Any confirmation from Apple to the issue?

"Feels sluggish" is subjective and hard to troubleshoot. If there was something systemically wrong with your model computer these communities would be overrun with posts about the issue. Your question to Apple won't be answered here. This is a user to user help community. You could run etrecheckand post the report here so that we may see if anything may be contributing to the "sluggish performance" you are "feeling".

When I say "Sluggish" I mean that all apps and the operating systems do not display the smoothness I am used to. When scrolling in apps, it seems to jitter along instead of displaying a smooth scroll. It is especially noticeable when pictures come into view when scrolling. Every time a new picture comes into view, its like the OS stalls/jitters, loads the pic, jitters, then moves onto the new pic. This is noticeable in apps like Safari, Tweetbot, Evernote, Messages, etc. Even the dock jitters when running the mouse from left to right. It comes and goes but is very annoying. It's almost like it is a display/refresh issue. My iPad Pro seems to run better than my new 2018 MBP... I though it went away when turning off the "Automatic Graphics Switching" to enable the 560x, but it is still there just not as noticeable as when on the Iris 630.

I have the 2018 15” i9 and mine is doing the same thing. Some days it feels super slick and then other days it takes about 2 full seconds to open a window or a preview. And trying to use something like Lightroom, selecting a photo takes about 5 seconds to load. I try resetting and everything and is the same. Just comes and goes. This laptop cost me £4000 and it seems slower than my 2012 rMBP? ***

Good idea. I suggested the same thing several posts back but for some unknown reason subsequent posts have just piled on and speculated. Hopefully mzaken will take your advice.