My Impish installation don't behave like that.
At restart
I see the spinner for about 4 sec, then black screen for about 12 sec until I see the "Asus logo" and a second later the grub menu.
The only customization is some extensions:
ArcMenu
Just Perfection to move the panel to bottom of the screen
Places Status Indicator
Vitals
Weather in The Clock
Ubuntu Dock is turned off
p-i@pi-asus-b550m-wifi:~$ inxi -Fz
System:    Kernel: 5.13.0-14-generic x86_64 bits: 64 Desktop: GNOME 40.2 Distro: Ubuntu 21.10 (Impish Indri) 
Machine:   Type: Desktop System: ASUS product: N/A v: N/A serial: <filter> 
           Mobo: ASUSTeK model: TUF GAMING B550M-PLUS (WI-FI) v: Rev X.0x serial: <filter> UEFI: American Megatrends v: 1804 
           date: 02/02/2021 
CPU:       Info: 6-Core model: AMD Ryzen 5 5600X bits: 64 type: MT MCP cache: L2: 3 MiB 
           Speed: 2876 MHz min/max: 2200/3700 MHz Core speeds (MHz): 1: 2876 2: 2878 3: 3599 4: 2875 5: 3595 6: 2876 7: 2446 
           8: 2236 9: 2235 10: 2238 11: 2236 12: 2885 
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] driver: amdgpu 
           v: kernel 
           Device-2: Logitech Webcam C250 type: USB driver: snd-usb-audio,uvcvideo 
           Display: wayland server: X.Org 1.21.1.2 driver: loaded: amdgpu note: n/a (using device driver) 
           resolution: 2560x1440~60Hz 
           OpenGL: renderer: AMD Radeon RX 5700 (NAVI10 DRM 3.41.0 5.13.0-14-generic LLVM 12.0.1) v: 4.6 Mesa 21.1.4 
Audio:     Device-1: Advanced Micro Devices [AMD/ATI] Navi 10 HDMI Audio driver: snd_hda_intel 
           Device-2: Advanced Micro Devices [AMD] Starship/Matisse HD Audio driver: snd_hda_intel 
           Device-3: Logitech Webcam C250 type: USB driver: snd-usb-audio,uvcvideo 
           Sound Server-1: ALSA v: k5.13.0-14-generic running: yes 
           Sound Server-2: PulseAudio v: 15.0 running: yes 
           Sound Server-3: PipeWire v: 0.3.32 running: yes 
Network:   Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi 
           IF: wlp6s0 state: down mac: <filter> 
           Device-2: Realtek RTL8125 2.5GbE driver: r8169 
           IF: enp7s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Bluetooth: Device-1: Intel AX200 Bluetooth type: USB driver: btusb 
           Report: hciconfig ID: hci0 state: up address: <filter> bt-v: 3.0 
Drives:    Local Storage: total: 1.36 TiB used: 55.86 GiB (4.0%) 
           ID-1: /dev/nvme0n1 vendor: Corsair model: Force MP600 size: 465.76 GiB 
           ID-2: /dev/nvme1n1 vendor: Kingston model: SA2000M8500G size: 465.76 GiB 
           ID-3: /dev/sda vendor: Samsung model: SSD 860 EVO 500GB size: 465.76 GiB 
Partition: ID-1: / size: 456.89 GiB used: 55.83 GiB (12.2%) fs: ext4 dev: /dev/sda2 
           ID-2: /boot/efi size: 511 MiB used: 33.9 MiB (6.6%) fs: vfat dev: /dev/nvme0n1p1 
Swap:      ID-1: swap-1 type: file size: 2 GiB used: 0 KiB (0.0%) file: /swapfile 
Sensors:   System Temperatures: cpu: 35.6 C mobo: 40.0 C gpu: amdgpu temp: 42.0 C 
           Fan Speeds (RPM): fan-1: 730 fan-2: 938 fan-3: 720 fan-7: 929 gpu: amdgpu fan: 0 
Info:      Processes: 373 Uptime: 3m Memory: 15.54 GiB used: 1.81 GiB (11.7%) Shell: Bash inxi: 3.3.06 
p-i@pi-asus-b550m-wifi:~$