aswsp.sys is definitely an Avast driver.
0x8E errors are almost always caused by hardware though sometimes by faulty drivers.
Avast is a very stable product so my first question is did you try updating your Avast or go to their very active forum community to see if there are threads on this driver?
Second, when do your system crashes occur? You indicate randomly but is this including both while you are on the internet and off the internet?