Same issue, I've noticed something very strange.  If the below lines are 
commented out, the lag takes a few minutes to kick in (vs immediately when not 
commented out).
edit /usr/lib/udev/rules.d/61-gdm.rules
comment out the 2 lines:
RUN+="/usr/libexec/gdm-runtime-config set daemon PreferredDisplayServer xorg"
RUN+="/usr/libexec/gdm-runtime-config set daemon WaylandEnable false"
As a side note, Wayland does not well work for me, however, 
/etc/gdm3/custom.conf forces x11.
i.e.
echo $XDG_SESSION_TYPE
x11

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https://bugs.launchpad.net/bugs/2059847

Title:
  Input lag in native terminal on Nvidia desktops with X11

Status in Mutter:
  New
Status in mutter package in Ubuntu:
  In Progress

Bug description:
  There is a noticeable delay in input while using the native terminal.
  I belive it was caused by a recent software update, as this issue is
  relatively new.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 6.5.0-26.26~22.04.1-generic 6.5.13
  Uname: Linux 6.5.0-26-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia wl
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Mar 30 19:57:13 2024
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed 
maybe-ubiquity quiet splash ---
  InstallationDate: Installed on 2024-03-30 (0 days ago)
  InstallationMedia: Ubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 
(20240220)
  SourcePackage: ubiquity
  Symptom: installation
  UpgradeStatus: No upgrade log present (probably fresh install)

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