I also have tried to set raw input to off and even tried it out with touchscreen mode on and off.
it get's a little bit better with raw input set to off, but still not playable, as nearly all mouse movement will still be interpretet as up or downwards movement with a spin in it.
Florian Kolbe
I can confirm was Lukas Lüdke said in https://bugs.mojang.com/browse/MC-126875?focusedCommentId=568050&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-568050 using 1.15.2 here and TeamViewer.