Hello I have had this modem for around 3 months now and it was working really well until a week ago, I noticed I have stutters in online games and my internet speed was extremely low, until I restarted my router and when I went to check on my router's status page I found the number of downstream error packets is quite big

After I restart my router it goes down to 0 and starts increasing gradually after 12 h I've to restart my router again for the counter to reset

what is this?