I'm not familiar with that brand of soap, but too much soap/detergent of most any kind will cause a problem. I wonder if your drain is too small. Newer washer pump out their water extremely fast, so the new requirement for washer drains is 2" pipe. Of course a clog in the drain will cause back up too. Perhaps a combination of a clog and too much soap? I suggest keeping the detergent use within the recommended limits and see what happens. If the drain is only 1-1/2", you may get by with controlling the detergent, perhaps a different brand that doesn't generate so much suds. Oxy Clean would not be part of the problem. If the drain size is OK and you cut down on the detergent and still have the problem, then a plumber that can auger the drain to the street would be the next move. Never use chemicals like Drano, Liquid Plumber, etc. These don't work and they are caustic and will damage the pipes and create a hazard for the plumber who will eventually have to be called. DIY snakes are too small and even if they reach the clog, will either just push through it or shove in deeper and pack it tighter.