Dual mining Pascal, latency creeps up

[chimplicker]

Afternoon,

I've been dual mining with Claymore for some time now, I have always opted for Siacoin + Eth but I decided to give Pascal + Eth a go and have bumped into a very strange issue.

When I launch Claymore I'm getting approx 60-80ms which is acceptable but as time goes on the ping rate slow climbs, after an hour it could be 100-200ms and after 4 hours it could be 400-800ms.  I have no idea what could be causing this.  As time goes on my rejected shares in Eth increase up to about 15-20%

I can dual mine Eth+Siacoin for days and the ping never goes above 80ms.

Has any experienced this issue themselves?  Any tips on correcting the issue?

Claymore Ver 10.0