If you are familiar with ssh and want to do some live monitoring while investigating the problem, you can create a simple script:
#!/bin/bash
while true; do
core=$(ha core stats --raw-json | jq .data.cpu_percent)
sup=$(ha supervisor stats --raw-json | jq .data.cpu_percent)
echo "Core Usage: ${core}"
echo "Supervisor Usage: ${sup}"
echo "------------------------"
sleep 1
done