Miner not getting any witnesses as of late

Hi everyone, I recently upgraded my the SD card (to a 64GB endurance Lexar) earlier this week and have not received any rewards as of yet. I have been having issues with my rak 2 miner for a few months now and assumed it was the SD card, but still no avail. I see the arrival order on all my witnesses are 2-3milliseconds too late. Any solutions? Getting quite frustrated at this point.

Miner name: Virtual Wooden Dove