@lyicx#10051 well, not actually. Version 1803-1809 (LTSC) still has some hidden features that can make computer a little slower unlike versions 1507-1607 (LTSB). But you can disable them and also use ShutUp10 to disable spying and other shit. In that way, you can get back performance feel like 7 or 8 on windows 10 1803 and maybe even on 1903-20H2.
I havent tested yet but i know for sure.
I also felt that performance drop on welcome screen, which u stay 5 seconds.
On 8.1 and 10 versions 1507-1607 you wait only 1 second on welcome screen. So yeah, i suppose these features are the problem.