FECs and CRCs

Line 1 CRC 5502 FEC 9280903 Line 2 CRC 6915 FEC 9954162 I did a reset and cleared logs and hour ago, CRC 0 FECs between 600 and 800 on line 1 and 2. Any thing to be worried about? Speed test indicates correctly, however web pages are loading slowly. I cleared cache, disk clean up and still pages loads slow. No viruses or malware.