\setmathfont command requires 2 minutes to compile with lualatex - time

Question

This code takes 10 seconds to compile to a pdf. If I enable in the code the additional lines it takes 2 minutes to compile for the 5 lines. And this happens everytime.
Why does it take so long, and how can I prevent it?
The system is texlive on windows with latest packages:
This is LuaHBTeX, Version 1.15.0 (TeX Live 2022) (format=lualatex 2022.12.10) 17 DEC 2022 20:53
restricted system commands enabled.
LaTeX2e <2022-11-01> patch level 1
Lua module: luaotfload 2022-10-03 3.23 Lua based OpenType font support
This is the code
% !TeX encoding=utf8
% !TeX program = lualatex
\documentclass{article}
\usepackage{fontspec}
\usepackage{amsmath}
\usepackage{unicode-math}
\usepackage{tabularray}
\usepackage{xcolor}
\begin{document}
\newcommand{\fontstring}{Sphinx of black quartz, judge my vow.}
\newcommand{\mathstring}{$f(u,v) = \iiint \left[u\nabla^{2}v+\left(\nabla u,\nabla v\right)\right]\mathrm{d}^{3}V$}
\colorlet{tablerowcolor}{gray!10}
\colorlet{tablesubheadcolor}{azure3!30}
{ % start a group
\small\renewcommand{\arraystretch}{1.4}\sffamily
% the table
\begin{longtblr}[
caption = {Font examples},
label = {tab:doc:Font:Gallery}]
{
colspec = {X[1,l]>{\ttfamily}X[2,l]},
width = 1.0\textwidth,
row{odd} = {bg=tablerowcolor},
row{1} = {bg=azure3, fg=white, font=\sffamily\upshape},
rowhead = 1,
rowfoot = 0,
}
\hline % Table Header
Font & Example \\
\hline %
%
\SetCell[c=2]{l,bg=tablesubheadcolor} Latin Modern Family \\
Latin Modern Roman & \setmainfont{Latin Modern Roman} \rmfamily \fontstring \\
Latin Modern Sans & \setsansfont{Latin Modern Sans} \sffamily\fontstring \\
Latin Modern Mono & \setmonofont{Latin Modern Mono} \ttfamily \fontstring \\
%
\SetCell[c=2]{l,bg=tablesubheadcolor} Math Fonts \\
%
Latin Modern Math & \setmathfont{Latin Modern Math} \rmfamily \mathstring \\
% TeX Gyre Termes Math & \setmathfont{TeX Gyre Termes Math} \rmfamily \mathstring \\
% TeX Gyre Pagella Math & \setmathfont{TeX Gyre Pagella Math} \rmfamily \mathstring \\
% Charter - math version & \setmathfont{XCharter-Math.otf} \rmfamily \mathstring \\
% Garamond math version & \setmathfont{Garamond-Math} \rmfamily \mathstring \\
% Cambria Math & \setmathfont{Cambria Math} \rmfamily \mathstring \\
% %
\hline
%
\end{longtblr}
} % close the group
\end{document}