He will be given a Warning + sent a notification for his Spiking and lagging just because of his past history.
For Your Information take note of the things I stated below.
~Requirements~
- If the report is based on clanwar you have to provide a replay with minimum of 3 rounds and minimum of 4 screenshots showing the ping of the user.
- It is mandatory that you inform the user of his lags / spikes and give him the chance to fix it at least twice.