I am having issues with the connection ( ADSL Max on a Draytek 2820n ) being fairly unstable and seem to be getting RX CRC errors. Is this number of errors unusually high?

Should I revert to an older firmware which seemed more stable? ( I am currently using the long distance latest firmware)

Could this be being caused by my ISP or some incorrect settings?

Any advice would be appreciated.

If you work it out compared to RX Blocks, you've got a 0.01% error rate, which doesn't seem too bad, it's odd that it's unstable though - is the ADSL actually dropping or do you just a see a loss of internet access?

Yea seems I am not looking at it correctly, I believe it is an ISP issue so am currently in the process of changing ISPs. Will see how that goes!