I did perf record and report and here is the output I got. I closed everything.

   54.48%     0.00%  gnome-shell      [unknown]                        [.] 0000000000000000
+   24.73%     0.21%  gnome-shell      [kernel.kallsyms]                [k] entry_SYSCALL_64_after_hwframe
+   24.35%     0.12%  gnome-shell      [kernel.kallsyms]                [k] do_syscall_64
+   23.20%     0.29%  gnome-shell      [kernel.kallsyms]                [k] x64_sys_call
+   18.53%     9.64%  gnome-shell      libgraphene-1.0.so.0.1000.8      [.] graphene_matrix_multiply
+   17.08%     0.00%  gnome-shell      [unknown]                        [k] 0x0000000100000008
+   16.89%     0.15%  gnome-shell      libc.so.6                        [.] __poll
+   15.72%     0.11%  gnome-shell      [kernel.kallsyms]                [k] __x64_sys_poll
+   15.53%     0.14%  gnome-shell      [kernel.kallsyms]                [k] do_sys_poll
+   12.31%     1.44%  gnome-shell      [kernel.kallsyms]                [k] do_poll.constprop.0
+    9.71%     0.00%  gnome-shell      [unknown]                        [.] 0x0000000200000004
+    9.65%     0.00%  gnome-shell      [unknown]                        [.] 0x0000000200000002
+    9.39%     0.00%  gnome-shell      [unknown]                        [.] 0x0000000200000003
+    4.69%     1.96%  gnome-shell      [kernel.kallsyms]                [k] timerfd_poll
+    3.96%     3.21%  gnome-shell      libglib-2.0.so.0.7200.4          [.] g_main_context_check
+    3.28%     0.00%  gnome-shell      [unknown]                        [.] 0x000055633190de50
+    3.15%     0.13%  gnome-shell      libc.so.6                        [.] __libc_recvmsg
+    3.00%     0.00%  gnome-shell      [unknown]                        [.] 0x0000000000000001
+    2.81%     0.54%  gnome-shell      [kernel.kallsyms]                [k] _raw_spin_lock_irqsave
+    2.75%     0.00%  gnome-shell      libc.so.6                        [.] __libc_sendmsg
+    2.71%     0.53%  gnome-shell      [kernel.kallsyms]                [k] __raw_spin_lock_irqsave
+    2.67%     0.98%  gnome-shell      libgraphene-1.0.so.0.1000.8      [.] graphene_vec4_dot
+    2.63%     0.02%  gnome-shell      [kernel.kallsyms]                [k] __x64_sys_sendmsg
+    2.61%     0.10%  gnome-shell      [kernel.kallsyms]                [k] __x64_sys_recvmsg
+    2.60%     0.06%  gnome-shell      [kernel.kallsyms]                [k] __sys_sendmsg
+    2.56%     0.01%  gnome-shell      [kernel.kallsyms]                [k] schedule_hrtimeout_range
+    2.54%     0.11%  gnome-shell      [kernel.kallsyms]                [k] __sys_recvmsg
+    2.53%     0.05%  gnome-shell      [kernel.kallsyms]                [k] schedule_hrtimeout_range_clock
+    2.52%     0.90%  gnome-shell      [kernel.kallsyms]                [k] __fget_light
+    2.52%     0.07%  gnome-shell      [kernel.kallsyms]                [k] ___sys_sendmsg
+    2.39%     0.40%  gnome-shell      [kernel.kallsyms]                [k] __fdget
+    2.37%     0.07%  gnome-shell      [kernel.kallsyms]                [k] ____sys_sendmsg
+    2.34%     0.02%  gnome-shell      [kernel.kallsyms]                [k] schedule
+    2.30%     0.07%  gnome-shell      [kernel.kallsyms]                [k] __schedule
+    2.29%     2.21%  gnome-shell      libc.so.6                        [.] __memmove_avx512_unaligned_erms
+    2.20%     0.05%  gnome-shell      [kernel.kallsyms]                [k] unix_stream_sendmsg
+    2.17%     0.10%  gnome-shell      [kernel.kallsyms]                [k] ___sys_recvmsg